Expansion of 1/(2 - g^2)^2, where g = 1+x*g^3 is the g.f. of A001764.

A390424

Expansion of 1/(2 - g^2)^2, where g = 1+x*g^3 is the g.f. of A001764.

Terms

    a(0) =1a(1) =4a(2) =26a(3) =176a(4) =1209a(5) =8360a(6) =57998a(7) =403048a(8) =2803322a(9) =19505448a(10) =135732626a(11) =944461632a(12) =6570687403a(13) =45702062144a(14) =317791588456

External references