2,1

G.f.: x^2(-x^5+5x^4-10x^3+10x^2-5x+2)/[(1-2x)(1-x)^4].

Sequence in context: A112089 A075062 A022497 this_sequence A082047 A129020 A024024

Adjacent sequences: A054125 A054126 A054127 this_sequence A054129 A054130 A054131

nonn

Clark Kimberling (ck6(AT)evansville.edu)