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%I #7 Sep 05 2022 20:02:35
%S 2,2,0,6,58,22,0,272,1882,386,9116,1586,44424,94474,0
%N Number of distinct odd values of the (n-1)-st difference of permutations of 1..n.
%C a(4)=a(8)=a(16)=0 because when n>2 is a power of a prime p, the (n-1)-st difference of any permutation of 1..n is a multiple of p.
%Y Cf. A174103, A130803.
%K nonn
%O 2,1
%A _R. H. Hardin_ Mar 07 2010, comment from _M. F. Hasler_ and Max Alekseyev, on the Sequence Fans Mailing List
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