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A023839 Sum of exponents in prime-power factorization of C(5n,n-2). 1
0, 2, 3, 5, 6, 7, 8, 9, 9, 10, 10, 13, 12, 15, 13, 15, 15, 14, 16, 18, 16, 18, 19, 19, 22, 23, 23, 24, 23, 23, 22, 26, 22, 24, 25, 24, 24, 28, 26, 27, 28, 27, 28, 33, 30, 29, 31, 33, 33, 34, 35, 38, 37, 39, 37, 37, 38, 38, 42, 40, 38, 40, 39, 41, 38, 36, 38, 43, 40, 44, 42, 44, 42, 44, 45, 48, 49, 49 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Ivan Neretin, Table of n, a(n) for n = 2..10000

MATHEMATICA

Table[PrimeOmega[Binomial[5 n, n - 2]], {n, 2, 79}] (* Ivan Neretin, Nov 08 2017 *)

CROSSREFS

Sequence in context: A280098 A019517 A031976 * A004723 A293754 A242410

Adjacent sequences:  A023836 A023837 A023838 * A023840 A023841 A023842

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

Offset corrected to 2 by Ivan Neretin, Nov 08 2017

STATUS

approved

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Last modified September 25 23:23 EDT 2020. Contains 337346 sequences. (Running on oeis4.)