1,2

Harvey P. Dale, Table of n, a(n) for n = 1..1000

a(n) = A007953(A000292(n)). - Michel Marcus, Dec 19 2016

Total[IntegerDigits[#]]&/@Table[(n(n+1)(n+2))/6, {n, 80}] (* Harvey P. Dale, Jul 31 2013 *)

(PARI) a(n)=sumdigits(n*(n+1)*(n+2)/6) \\ Charles R Greathouse IV, Dec 19 2016

Cf. A000292, A007953.

Sequence in context: A081454 A133883 A279816 * A128077 A128078 A331152

Adjacent sequences: A004157 A004158 A004159 * A004161 A004162 A004163

nonn,base,easy

N. J. A. Sloane.

approved