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A321064 Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=8. 1
654424, 19209584, 769534688, 39729927744, 2548520444480, 197890932247680, 18237517555977472, 1964023269922621952, 244043425473888612352, 34621419911316556017664, 5557654485553447834816512, 1001744885342172367869042688, 201381195927539873971774119936 (list; graph; refs; listen; history; text; internal format)
OFFSET
8,1
LINKS
CROSSREFS
Column k=8 of A262372.
Sequence in context: A105002 A162892 A232675 * A186614 A251279 A205941
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 26 2018
STATUS
approved

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Last modified March 1 12:07 EST 2024. Contains 370433 sequences. (Running on oeis4.)