a(n) = [x^(n*(n+2))] Sum_{m>=0} x^m * (x^(m+1) + i)^m / (1 + i*x^(m+1))^(m+1), for n >= 0.
A324303
a(n) = [x^(n*(n+2))] Sum_{m>=0} x^m * (x^(m+1) + i)^m / (1 + i*x^(m+1))^(m+1), for n >= 0.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =33a(4) =323a(5) =1753a(6) =8991a(7) =58495a(8) =268541a(9) =1462761a(10) =8097455a(11) =13837475a(12) =251595971a(13) =1409934009a(14) =9674895101a(15) =46242140669a(16) =252055236611
External references
- oeis: A324303