User:Georg Fischer/Index updates

Aa part of the broken link maintenance project the correspondance between the links to the Index to OEIS and the sequence numbers mentioned in the subpages of the index can be checked. Though the links themselves are not broken, there are:

• sequence numbers not mentioned in the target index page,
• sequence numbers mentioned in an index page where the sequence has no link to that index page,
• different signatures for linear recurrences.