OFFSET

1,2

LINKS

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

MATHEMATICA

Join[{0}, Table[Total[Transpose[FactorInteger[Binomial[5 n, n-1]]] [[2]]], {n, 2, 80}]] (* Harvey P. Dale, Dec 31 2012 *)

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved