1,1

G.f.: [x(2-x)(1+2x)]/[(1-x-x^2)(1-x)^2]. - R. Stephan, Apr 05 2004

G.f.: [x(2+3x-2x^2)]/[(1-x-x^2)(1-x)^2]. - Ralf Stephan, Apr 28 2004

Sequence in context: A041963 A005476 A131476 this_sequence A024850 A056105 A106058

Adjacent sequences: A023546 A023547 A023548 this_sequence A023550 A023551 A023552

nonn

Clark Kimberling (ck6(AT)evansville.edu)