a(n) equals the coefficient of x^(2*n-1) in Sum_{m>=0} (x^m + 1/x^m)^m for n >= 1.
A316596
a(n) equals the coefficient of x^(2*n-1) in Sum_{m>=0} (x^m + 1/x^m)^m for n >= 1.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =35a(4) =127a(5) =462a(6) =1716a(7) =6440a(8) =24310a(9) =92378a(10) =352737a(11) =1352078a(12) =5200301a(13) =20058384a(14) =77558760a(15) =300540195a(16) =1166803440a(17) =4537567657a(18) =17672631900a(19) =68923265697a(20) =269128937220
External references
- oeis: A316596