4,1

G.f.: [x^4*(3-2x)*(1-x+x^2)*(1-4x+7x^2-4x^3+x^4)]/(1-x)^8. Differences of A027970. - Ralf Stephan, Feb 07 2004

A column of triangle A027011.

Sequence in context: A059512 A094297 A026107 this_sequence A027971 A018028 A045994

Adjacent sequences: A027966 A027967 A027968 this_sequence A027970 A027971 A027972

nonn

Clark Kimberling (ck6(AT)evansville.edu)