0,2
restart:a:=n->mul(3*sum(1, j=0..n), k=0..n): seq(a(n), n=-1..13); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 01 2009]
Sequence in context: A199258 A203493 A006587 * A121245 A193754 A173217
Adjacent sequences: A091479 A091480 A091481 * A091483 A091484 A091485
nonn
Christian G. Bower (bowerc(AT)usa.net), Jan 13 2004