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A125911 Product of the even divisors of n. 5
1, 2, 1, 8, 1, 12, 1, 64, 1, 20, 1, 576, 1, 28, 1, 1024, 1, 216, 1, 1600, 1, 44, 1, 110592, 1, 52, 1, 3136, 1, 3600, 1, 32768, 1, 68, 1, 373248, 1, 76, 1, 512000, 1, 7056, 1, 7744, 1, 92, 1, 84934656, 1, 1000, 1, 10816, 1, 11664, 1, 1404928, 1, 116, 1, 207360000, 1, 124, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = A007955(n) / A136655(n).

MATHEMATICA

Table[Times@@Select[Divisors[n], EvenQ], {n, 70}] (* Harvey P. Dale, Jul 06 2017 *)

CROSSREFS

Cf. A136655, A126192.

Cf. A001227, A183063, A000593, A136655.

Sequence in context: A284346 A083529 A102208 * A009385 A008308 A176889

Adjacent sequences:  A125908 A125909 A125910 * A125912 A125913 A125914

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 14 2008

STATUS

approved

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Last modified February 24 07:50 EST 2018. Contains 299599 sequences. (Running on oeis4.)