almost identical sequences in OEIS

David Wasserman dwasserm at earthlink.com
Thu Jan 27 06:39:51 CET 2005


Has anyone previously seen an example of two sequences that are known to be different, but the difference doesn't occur within the number of terms that fit in the database?  Since the two sequences are identical for lookup & superseeker purposes, one could argue that the two should share an A-number.  However, each one could have formulae and comments that aren't true for the other, so that could be messy.  If someone wanted to refer to one of these sequences in a formula or comment on another sequence, that could be very confusing.  So I would suggest that each should have its own entry, each should have a comment saying that it's different from the other one, and if possible, it should say where the first difference occurs.  However, if sequence A is very well-known and sequence B is esoteric, that perhaps the references should only point from B to A.  It could definitely be useful to have the sequence of those n where A and B differ, the sequence of values of A for these !
n, and likewise for B.






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