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%I #6 Oct 02 2025 22:44:34
%S 1,37,894,18212,342909,6232590,111950361,2014983453,36663029801,
%T 678413022961
%N Number of permutations of 1..n containing the relative rank sequence { 256413 } at any spacing.
%C Same series for 453162 324615 261354 516423 314652 463125 521364
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PermutationPattern.html">Permutation Pattern</a>
%Y A056986 A158005 A158423
%K nonn
%O 6,2
%A _R. H. Hardin_, Apr 05 2009