A068338 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A068338

n!^2 * sum{k=1 to n} mu(k)/k^2, where mu(k) is the Moebius function.

0

1, 3, 23, 368, 8624, 324864, 15399936, 985595904, 79833268224, 8115008716800, 968747865292800, 139499692602163200, 23346005516963020800, 4614592869368384716800, 1045883450064438558720000

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..15.

CROSSREFS

Sequence in context: A363577 A260509 A073588 * A255881 A243195 A233218

Adjacent sequences: A068335 A068336 A068337 * A068339 A068340 A068341

KEYWORD

nonn

AUTHOR

Leroy Quet, Feb 27 2002

STATUS

approved