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A094590 a(1) = 1; a(n+1) = a(n) * k(n), where k(n) is the number of elements of {a(j)}, 1<=j<=n, which are <= n. 1
1, 1, 2, 6, 18, 54, 216, 864, 3456, 13824, 55296, 221184, 884736, 3538944, 14155776, 56623104, 226492416, 905969664, 4529848320, 22649241600, 113246208000, 566231040000, 2831155200000, 14155776000000, 70778880000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..25.

CROSSREFS

Cf. A094589.

Sequence in context: A086680 A275872 A148455 * A004529 A238236 A294159

Adjacent sequences:  A094587 A094588 A094589 * A094591 A094592 A094593

KEYWORD

nonn,easy

AUTHOR

Leroy Quet, Jun 07 2004

EXTENSIONS

More terms from Vladeta Jovovic, Jun 13 2004

STATUS

approved

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Last modified October 17 07:39 EDT 2021. Contains 348048 sequences. (Running on oeis4.)