0,2

a(0) = 1, a(n) = (n^2-n)2^n/4 + 2n. a(n) = A003013(n) + n = A001815(n) + 2n. - Ralf Stephan (ralf(AT)ark.in-berlin.de), Sep 02 2003

Cf. A048482, A001787, A005183.

Sequence in context: A066158 A148456 A148457 this_sequence A091142 A111961 A071721

Adjacent sequences: A002996 A002997 A002998 this_sequence A003000 A003001 A003002

nonn

N. J. A. Sloane (njas(AT)research.att.com).