G.f.: A(x) = (1/x)*series_reversion(x^2/G124344(x)), where G124344(x) is the g.f. of A124344 and satisfies: A(x)^2 = (1/x)*G124344(x*A(x)).
A124890
G.f.: A(x) = (1/x)*series_reversion(x^2/G124344(x)), where G124344(x) is the g.f. of A124344 and satisfies: A(x)^2 = (1/x)*G124344(x*A(x)).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =11a(4) =47a(5) =216a(6) =1047a(7) =5263a(8) =27191a(9) =143484a(10) =770047a(11) =4190031a(12) =23062044a(13) =128170182a(14) =718257014a(15) =4054089110a(16) =23026890216a(17) =131517480529a(18) =754865316100
External references
- oeis: A124890