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A072043
a(n) = a(n-1)*a(n-2)*a(n-3)*(1+1/(n-3)), a(1)=a(2)=a(3)=1.
0
1, 1, 1, 2, 3, 8, 60, 1728, 967680, 114661785600, 215698302044209152000, 26592225368515593301597083402240000000, 723457119656730571214801208759677424070060705650559470796800000000000
OFFSET
1,4
MATHEMATICA
a[1] = a[2] = a[3] = 1; a[n_] := a[n - 1]*a[n - 2]*a[n - 3]*(1 + 1/(n - 3)); Table[ a[n], {n, 1, 13}]
CROSSREFS
Sequence in context: A042365 A329496 A160634 * A347289 A095203 A351658
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, Jul 29 2002
EXTENSIONS
Edited by Robert G. Wilson v, Jul 31 2002
a(11) corrected by Sean A. Irvine, Aug 27 2024
STATUS
approved