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A131637 Phi(Bell(n). 0
1, 1, 1, 4, 8, 24, 168, 876, 1056, 11232, 92760, 180944, 4010832, 27644436, 93648672, 1101958000, 10436655840, 27621623160, 584607107256, 5792507548200, 21804094801440, 316556065451520, 2811301938708480, 21826781430144768 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..23.

MAPLE

with(numtheory):with(combinat):a:=n->phi(bell(n)): seq(a(n), n=0..25);

CROSSREFS

Sequence in context: A052578 A066631 A090896 * A163143 A154586 A185615

Adjacent sequences:  A131634 A131635 A131636 * A131638 A131639 A131640

KEYWORD

nonn

AUTHOR

Zerinvary Lajos, Oct 02 2007

STATUS

approved

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Last modified August 19 08:50 EDT 2019. Contains 326119 sequences. (Running on oeis4.)