Expansion of g^2/(1 - x^3*g^3), where g = 1+x*g^3 is the g.f. of A001764.
A391127
Expansion of g^2/(1 - x^3*g^3), where g = 1+x*g^3 is the g.f. of A001764.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =31a(4) =148a(5) =753a(6) =4007a(7) =22026a(8) =124103a(9) =712956a(10) =4160464a(11) =24593297a(12) =146952785a(13) =886176357a(14) =5386253442a(15) =32963243241a(16) =202947767439
External references
- oeis: A391127