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A025559 (1/1 - 1/3 + 1/6 + ... + d/C(n+1,2))*LCM{1,3,6,...,C(n+1,2)}, where d = (-1)^n. 0
1, 2, 5, 22, 24, 158, 331, 958, 986, 10594, 10804, 138142, 140122, 138406, 279815, 4711810, 4751850, 89604470, 90217082, 89662814, 90166694, 2063252482, 2072952172, 10320142286, 10361328662, 30969579386, 31075814086, 898330271594, 901007386034 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..29.

CROSSREFS

Sequence in context: A210575 A174143 A298762 * A072961 A249829 A042557

Adjacent sequences:  A025556 A025557 A025558 * A025560 A025561 A025562

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 28 17:43 EDT 2020. Contains 337393 sequences. (Running on oeis4.)