OFFSET
1,2
LINKS
Ivan Neretin, Table of n, a(n) for n = 1..10000
MATHEMATICA
Join[{0}, Table[Total[FactorInteger[Binomial[3 n, n - 1]][[All, 2]]], {n, 2, 78}]] (* Ivan Neretin, Nov 02 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved