OFFSET
2,2
LINKS
Ivan Neretin, Table of n, a(n) for n = 2..10000
MATHEMATICA
Join[{0}, Table[Total[FactorInteger[Binomial[4 n, n - 2]][[All, 2]]], {n, 3, 78}]] (* Ivan Neretin, Nov 02 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Offset corrected to 2 by Ivan Neretin, Nov 02 2017
STATUS
approved