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A125760 a(n) = Product_{k=1..n} A002109(k). 2
1, 1, 4, 432, 11943936, 1031956070400000, 4159895825138319360000000000, 13809882382682787973867537170432000000000000000, 769161257109634779902443718589603914508004789479014400000000000000000000, 16596916396875768196482032091931000424134701157007816971266990744831779993781534720000000000000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 0..18

MAPLE

seq(mul(mul(mul(k, j=1..k), k=1..m), m=1..n), n=0..9); # Zerinvary Lajos, Jun 01 2007

CROSSREFS

Sequence in context: A080321 A264469 A172858 * A053780 A159514 A217269

Adjacent sequences:  A125757 A125758 A125759 * A125761 A125762 A125763

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, based on a suggestion from J. M. Bergot, Feb 06 2007

STATUS

approved

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Last modified June 14 12:04 EDT 2021. Contains 345025 sequences. (Running on oeis4.)