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A321062 Number of ordered pairs (p,q) of permutations of [n] with equal up-down signatures and p(1)=q(1)=6. 1
1216, 19312, 467696, 15608288, 678914816, 37083546112, 2475764410944, 197890932247680, 18629724957708800, 2038137238577944576, 256240757035057154048, 36670707901174666768384, 5924904192825339158446080, 1073049649261575998090559488 (list; graph; refs; listen; history; text; internal format)
OFFSET
6,1
LINKS
Table of n, a(n) for n=6..19.
CROSSREFS
Column k=6 of A262372.
Sequence in context: A068783 A331625 A235889 * A059287 A225759 A059669
Adjacent sequences: A321059 A321060 A321061 * A321063 A321064 A321065
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 26 2018
STATUS
approved

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Last modified May 14 22:35 EDT 2024. Contains 372533 sequences. (Running on oeis4.)