G.f. satisfies A(x) = exp( Sum_{k>=1} (A(x^k) + A(i*x^k) + A(-x^k) + A(i^3*x^k))/4 * x^k/k ), where i = sqrt(-1).
A363405
G.f. satisfies A(x) = exp( Sum_{k>=1} (A(x^k) + A(i*x^k) + A(-x^k) + A(i^3*x^k))/4 * x^k/k ), where i = sqrt(-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =2a(7) =2a(8) =2a(9) =4a(10) =5a(11) =5a(12) =5a(13) =10a(14) =12a(15) =13a(16) =13a(17) =26a(18) =34a(19) =36a(20) =37a(21) =74a(22) =97a(23) =105a(24) =107a(25) =215a(26) =293a(27) =320a(28) =328a(29) =658
External references
- oeis: A363405