3 failing internet doctests in databases/oeis.py

[seblabbe]

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• I have searched the existing issues for a bug report that matches the one I want to file, without success.

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• I have read the documentation and troubleshoot guide

Environment

- **OS**: Ubuntu 18.04
- **Sage Version**: 10.0.beta7

Steps To Reproduce

The command

sage -t --optional=sage,internet src/sage/databases/oeis.py

returns

sage -t --long --random-seed=319675451421640445800652566785887159111 src/sage/databases/oeis.py
**********************************************************************
File "src/sage/databases/oeis.py", line 983, in sage.databases.oeis.OEISSequence.keywords
Failed example:
    f = oeis(53) ; f                      # optional -- internet
Expected:
    A000053: Local stops on New York City Broadway line (IRT #1) subway.
Got:
    A000053: Local stops on New York City 1 Train (Broadway-7 Avenue Local) subway.
**********************************************************************
File "src/sage/databases/oeis.py", line 1632, in sage.databases.oeis.OEISSequence.cross_references
Failed example:
    nbalanced.cross_references()              # optional -- internet
Expected:
    ('A049703', 'A049695', 'A103116', 'A000010')
Got:
    ('A000010', 'A002088', 'A011755', 'A049695', 'A049703', 'A103116')
**********************************************************************
File "src/sage/databases/oeis.py", line 1635, in sage.databases.oeis.OEISSequence.cross_references
Failed example:
    nbalanced.cross_references(fetch=True)    # optional -- internet
Expected:
    0: A049703: a(0) = 0; for n>0, a(n) = A005598(n)/2.
    1: A049695: Array T read by diagonals; ...
    2: A103116: a(n) = Sum_{i=1..n} (n-i+1)*phi(i).
    3: A000010: Euler totient function phi(n): count numbers <= n and prime to n.
Got:
    0: A000010: Euler totient function phi(n): count numbers <= n and prime to n.
    1: A002088: Sum of totient function: a(n) = Sum_{k=1..n} phi(k), cf. A000010.
    2: A011755: a(n) = Sum_{k=1..n} k*phi(k).
    3: A049695: Array T read by diagonals; T(i,j) is the number of nonnegative slopes of lines determined by 2 lattice points in [ 0,i ] X [ 0,j ] if i > 0; T(0,j)=1 if j > 0; T(0,0)=0.
    4: A049703: a(0) = 0; for n>0, a(n) = A005598(n)/2.
    5: A103116: a(n) = Sum_{i=1..n} (n-i+1)*phi(i).
**********************************************************************
2 items had failures:
   2 of   7 in sage.databases.oeis.OEISSequence.cross_references
   1 of   7 in sage.databases.oeis.OEISSequence.keywords
    5 webbrowser tests not run
    0 tests not run because we ran out of time
    [289 tests, 3 failures, 34.47 s]

Expected Behavior

All tests passes

Actual Behavior

3 failing doctests

Additional Information

No response