G.f. satisfies: A(x) = (12 + A(x)^4) / (13 - 27*x).
A245043
G.f. satisfies: A(x) = (12 + A(x)^4) / (13 - 27*x).
Terms
- a(0) =1a(1) =3a(2) =15a(3) =117a(4) =1158a(5) =12930a(6) =154986a(7) =1947582a(8) =25317009a(9) =337610451a(10) =4592807895a(11) =63488144109a(12) =889226772132
External references
- oeis: A245043