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A032117 Shifts left under "BIJ" (reversible, indistinct, labeled) transform. 0
2, 2, 6, 42, 438, 5898, 97014, 1884618, 42222582, 1071688842, 30393721206, 952533098442, 32690403883638, 1219333519991178, 49114397219993334, 2124699300233067978, 98248029245810336502, 4835941425413467183242 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

C. G. Bower, Transforms (2)

CROSSREFS

Sequence in context: A179236 A002027 A290957 * A137244 A284707 A174589

Adjacent sequences:  A032114 A032115 A032116 * A032118 A032119 A032120

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 23 17:41 EST 2018. Contains 299584 sequences. (Running on oeis4.)