[seqfan] Is A093468 identical to Partial sums of A001710 Order of alternating group A_n?

Jonathan Post jvospost3 at gmail.com
Thu May 13 00:47:22 CEST 2010


Is
A093468 a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + Sum
{a(n)-a(i), i = 1 to n}.
identical to
Partial sums of A001710  Order of alternating group A_n, or number of
even permutations of n letters.

Both begin: 1, 2, 3, 6, 18, 78, 438, 2958, 23118, ...

Thanks,

Jonathan Vos Post




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