a(n) is the coefficient of x^n*y^n/n in log( Product_{n>=1} 1/(1 - x^(2*n-1) - y^(2*n-1)) ), for n >= 1.
A322187
a(n) is the coefficient of x^n*y^n/n in log( Product_{n>=1} 1/(1 - x^(2*n-1) - y^(2*n-1)) ), for n >= 1.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =35a(4) =131a(5) =471a(6) =1723a(7) =6435a(8) =24349a(9) =92393a(10) =352727a(11) =1352183a(12) =5200313a(13) =20058321a(14) =77559203a(15) =300540195a(16) =1166803127a(17) =4537569063a(18) =17672631919a(19) =68923264585a(20) =269128942459
External references
- oeis: A322187