Expansion of g/(1 - x*g)^4, where g = 1+x*g^3 is the g.f. of A001764.

A391170

Expansion of g/(1 - x*g)^4, where g = 1+x*g^3 is the g.f. of A001764.

Terms

    a(0) =1a(1) =5a(2) =21a(3) =90a(4) =410a(5) =1986a(6) =10125a(7) =53742a(8) =294360a(9) =1652630a(10) =9463357a(11) =55065720a(12) =324692631a(13) =1935927855a(14) =11652151875a(15) =70704623526a(16) =432066583410

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