a(n) is the coefficient of x^n*y^n in Product_{n>=1} 1/(1 - x^(2*n-1) - y^(2*n-1)).
A322198
a(n) is the coefficient of x^n*y^n in Product_{n>=1} 1/(1 - x^(2*n-1) - y^(2*n-1)).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =84a(5) =312a(6) =1174a(7) =4420a(8) =16772a(9) =64014a(10) =245212a(11) =942668a(12) =3634914a(13) =14051530a(14) =54440336a(15) =211331906a(16) =821779372a(17) =3200447054a(18) =12481364146a(19) =48736064248a(20) =190513382908a(21) =745492958862
External references
- oeis: A322198