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A321063 Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=7. 1
24176, 533544, 16860608, 707767328, 37727416576, 2475764410944, 195463415776768, 18237517555977472, 1982309731660474368, 248048061418810109952, 35377310696428547145728, 5702015244617382235000832, 1030924606332352092323577856, 207727724955575700214833766400 (list; graph; refs; listen; history; text; internal format)
OFFSET
7,1
LINKS
CROSSREFS
Column k=7 of A262372.
Sequence in context: A110405 A234112 A234165 * A309018 A253465 A251154
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 26 2018
STATUS
approved

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)