[seqfan] Re: Sorting out incorrect versions of sequences

Richard Mathar mathar at strw.leidenuniv.nl
Thu Nov 12 00:28:58 CET 2009

In response to

The triple factorials are not defined unambiguously, independent of
whatever the Mma code would produce. So the only way out is to define
the triple factorials, preferentially by linking to one OEIS sequence which
does so, like A007661, or the other version A161474 (Wikipedia).
I think, whenever this is an non-intended application of Mma demonstrating
the learning curve of a submitter, one should document that case and reproduce in
the sequence the numbers that are actually generated if one uses ()!!! in the code,
followed by a strong comment in the sequence that these are NOT the triple factorials
but the factorials of the double factorials. If one would just delete, (as experience shows)
the same sequence will be submitted again sooner or latter...


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