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A066358 Recurring permutations: a(n) = P(a(n-1),a(n-2)) where P(x,y) = x!/(x-y)!. 0
1, 3, 3, 6, 120, 2629976731200 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..5.

CROSSREFS

Cf. A049022, A019437.

Sequence in context: A221886 A221925 A221688 * A261295 A118031 A335726

Adjacent sequences:  A066355 A066356 A066357 * A066359 A066360 A066361

KEYWORD

easy,nonn

AUTHOR

Floor van Lamoen, Dec 20 2001

STATUS

approved

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Last modified November 29 01:40 EST 2021. Contains 349416 sequences. (Running on oeis4.)