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

A391296

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

Terms

    a(0) =1a(1) =2a(2) =7a(3) =29a(4) =140a(5) =716a(6) =3822a(7) =21049a(8) =118765a(9) =683025a(10) =3989202a(11) =23597228a(12) =141081414a(13) =851177498a(14) =5175637088a(15) =31685421498a(16) =195140122656

External references