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A334517
Number of n X n whirlpool permutations (see A334518).
3
1, 8, 5904, 2456909824, 2179875344187129600
OFFSET
1,2
LINKS
CROSSREFS
Cf. A000142 (1Xn), A261683 (2Xn), A334516 (3Xn), A334518 and A334519 (mXn).
Sequence in context: A317732 A179151 A079189 * A278384 A114133 A221233
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, May 06 2020
STATUS
approved