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%I #4 Dec 09 2016 15:29:43
%S 1,20,4280,127917,6402984,208910728,7440888001,237920318012,
%T 7682498246390,241437687882797,7610900307811180,239466123419848086,
%U 7589962647890648579,242520044163828141976,7839783867491553405462,256717246780820798056943,8529320594216231644881865
%N Number of permutations of [n] having exactly eight (possibly overlapping) doubledescents.
%H Alois P. Heinz, <a href="/A279297/b279297.txt">Table of n, a(n) for n = 10..459</a>
%Y Column k=8 of A162975.
%K nonn
%O 10,2
%A _Alois P. Heinz_, Dec 09 2016
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