G.f. A(x) satisfies [x^(2*n)] A(x)^(3*n) = 3 and [x^(2*n+1)] A(x)^(3*n+1) = [x^(2*n+1)] A(x)^(3*n+2) for n >= 1.
A377095
G.f. A(x) satisfies [x^(2*n)] A(x)^(3*n) = 3 and [x^(2*n+1)] A(x)^(3*n+1) = [x^(2*n+1)] A(x)^(3*n+2) for n >= 1.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =-6a(4) =28a(5) =-49a(6) =-209a(7) =1945a(8) =-6300a(9) =-4446a(10) =151432a(11) =-743536a(12) =988060a(13) =10249455a(14) =-81504471a(15) =258880346a(16) =300869650a(17) =-8167615575a(18) =44558308870a(19) =-71525786057a(20) =-732809984342
External references
- oeis: A377095