G.f.: A(x) = (A_1)^3 where A_1 = 1 + x*(A_2)^3; A_2 = 1 + x^2*(A_3)^3; A_3 = 1 + x^3*(A_4)^3; ... A_n = 1 + x^n*(A_{n+1})^3 for n>=1.
A132331
G.f.: A(x) = (A_1)^3 where A_1 = 1 + x*(A_2)^3; A_2 = 1 + x^2*(A_3)^3; A_3 = 1 + x^3*(A_4)^3; ... A_n = 1 + x^n*(A_{n+1})^3 for n>=1.
Terms
- a(0) =1a(1) =3a(2) =3a(3) =10a(4) =18a(5) =18a(6) =72a(7) =93a(8) =141a(9) =381a(10) =423a(11) =990a(12) =1701a(13) =2304a(14) =4998a(15) =7275a(16) =12960a(17) =21195a(18) =34812a(19) =58860a(20) =90576a(21) =163603a(22) =239445a(23) =413964a(24) =669096a(25) =1017918a(26) =1768608a(27) =2639988a(28) =4383036a(29) =6880680
External references
- oeis: A132331