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A023978 Sum of exponents in prime-power factorization of multinomial coefficient M(3n; n,n,n). 0
2, 4, 7, 7, 9, 11, 14, 12, 13, 14, 19, 18, 20, 22, 23, 19, 23, 22, 27, 25, 25, 30, 33, 30, 30, 32, 33, 31, 34, 34, 38, 33, 34, 36, 38, 34, 37, 40, 42, 39, 42, 43, 50, 49, 48, 50, 54, 49, 50, 49, 51, 51, 53, 54, 55, 51, 53, 54, 61, 57, 60, 63, 63, 56, 56, 56, 61, 60, 61, 63, 66, 61, 64, 67, 69, 67, 68 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..77.

CROSSREFS

Sequence in context: A161211 A276807 A161368 * A152488 A109359 A025087

Adjacent sequences:  A023975 A023976 A023977 * A023979 A023980 A023981

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 15 19:54 EST 2018. Contains 317240 sequences. (Running on oeis4.)