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A048634 a(n)=a(n-1)*a(n-3)+a(n-2). 1
0, 0, 1, 0, 1, 1, 1, 2, 3, 5, 13, 44, 233, 3073, 135445, 31561758, 96989417779, 13136731722638413, 414618347540933702027833, 40213592128486236142855326045681320, 528275171395527518169753769210241662354568290572993 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Table of n, a(n) for n=0..20.

MAPLE

A048634 := proc(n) option remember; if n<=1 then 0 elif n=2 then 1 else A048634(n-1)*A048634(n-3)+A048634(n-2); fi; end;

CROSSREFS

Sequence in context: A192241 A093999 A042445 * A012899 A215102 A110364

Adjacent sequences:  A048631 A048632 A048633 * A048635 A048636 A048637

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, David(AT)interface.co.uk

STATUS

approved

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Last modified January 23 01:30 EST 2020. Contains 331166 sequences. (Running on oeis4.)