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A334517 Number of n X n whirlpool permutations (see A334518). 3
1, 8, 5904, 2456909824, 2179875344187129600 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
D. E. Knuth, Whirlpool Permutations, May 05 2020
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

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Last modified February 29 07:09 EST 2024. Contains 370414 sequences. (Running on oeis4.)