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A023842 Sum of exponents in prime-power factorization of C(5n,n-5). 1
0, 3, 3, 6, 6, 8, 8, 11, 10, 12, 9, 13, 13, 15, 11, 17, 16, 16, 15, 18, 16, 22, 22, 23, 22, 23, 20, 22, 22, 24, 22, 27, 22, 25, 25, 26, 24, 29, 24, 29, 30, 28, 27, 31, 31, 33, 32, 39, 35, 37, 34, 39, 36, 41, 38, 39, 37, 37, 34, 37, 39, 43, 38, 41, 40, 40, 39, 44, 40, 42, 42, 46, 47, 49, 46, 46, 47 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,2

LINKS

Ivan Neretin, Table of n, a(n) for n = 5..10000

MATHEMATICA

Table[PrimeOmega[Binomial[5 n, n - 5]], {n, 5, 81}] (* Ivan Neretin, Nov 08 2017 *)

CROSSREFS

Sequence in context: A219883 A219381 A219852 * A165885 A227128 A061795

Adjacent sequences:  A023839 A023840 A023841 * A023843 A023844 A023845

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

Offset corrected to 5 by Ivan Neretin, Nov 08 2017

STATUS

approved

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Last modified September 25 22:28 EDT 2020. Contains 337346 sequences. (Running on oeis4.)