A321063 - OEIS

%I #4 Oct 27 2018 14:25:15

%S 24176,533544,16860608,707767328,37727416576,2475764410944,

%T 195463415776768,18237517555977472,1982309731660474368,

%U 248048061418810109952,35377310696428547145728,5702015244617382235000832,1030924606332352092323577856,207727724955575700214833766400

%N Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=7.

%Y Column k=7 of A262372.

%K nonn

%O 7,1

%A _Alois P. Heinz_, Oct 26 2018