A023851 - OEIS

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A023851

Sum of exponents in prime-power factorization of binomial(5n, 2n+2).

1, 4, 5, 6, 8, 9, 10, 12, 12, 13, 15, 15, 16, 16, 17, 19, 18, 20, 18, 23, 25, 21, 22, 24, 24, 28, 29, 27, 29, 31, 28, 31, 32, 30, 32, 35, 34, 34, 36, 37, 35, 40, 36, 35, 39, 36, 37, 40, 38, 41, 43, 46, 46, 46, 45, 48, 46, 49, 47, 51, 52, 50, 48, 49, 51, 52, 49, 52, 55, 53, 54, 58, 55, 57, 60, 58, 62

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OFFSET

1,2

LINKS

Ivan Neretin, Table of n, a(n) for n = 1..10000

MATHEMATICA

Table[PrimeOmega[Binomial[5 n, 2 n + 2]], {n, 77}] (* Ivan Neretin, Nov 09 2017 *)

CROSSREFS

Cf. A023816-A023854.

Sequence in context: A134848 A061578 A284902 * A285279 A091242 A354834

Adjacent sequences: A023848 A023849 A023850 * A023852 A023853 A023854

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

Missing terms a(31), a(32) fixed by Ivan Neretin, Nov 09 2017

STATUS

approved