OFFSET
0,2
EXAMPLE
a(4)=sum of digits of binomial(3*4,4)=18 because binomial(3*4,4)=495.
MAPLE
a := proc (n) local nn: nn := convert(binomial(3*n, n), base, 10): add(nn[j], j = 1 .. nops(nn)) end proc: seq(a(n), n = 0 .. 70); # Emeric Deutsch, Jul 29 2009
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Yalcin Aktar, Jul 14 2009
EXTENSIONS
Extended by Emeric Deutsch, Jul 29 2009
STATUS
approved