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A081529 Duplicate of A002944. 1
1, 1, 2, 3, 12, 10, 60, 105, 280, 252, 2520, 2310, 27720, 25740, 24024, 45045, 720720, 680680, 12252240, 11639628, 11085360, 10581480, 232792560, 223092870, 1070845776, 1029659400, 2974571600, 2868336900 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..28.

FORMULA

Equals A003418(n) / n - Martin Fuller, Jan 03 2006

CROSSREFS

Cf. A003418.

Sequence in context: A093432 A212303 A100561 * A002944 A266366 A201501

Adjacent sequences:  A081526 A081527 A081528 * A081530 A081531 A081532

KEYWORD

dead

EXTENSIONS

More terms from Martin Fuller, Jan 03 2006

STATUS

approved

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Last modified January 28 09:17 EST 2020. Contains 331318 sequences. (Running on oeis4.)