a(n) = coefficient of x^n*y^n in Product_{n>=1} 1/(1 - (x^n + y^n)).
A322211
a(n) = coefficient of x^n*y^n in Product_{n>=1} 1/(1 - (x^n + y^n)).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =38a(4) =158a(5) =602a(6) =2382a(7) =9142a(8) =35492a(9) =136936a(10) =530404a(11) =2053848a(12) =7972272a(13) =30977742a(14) =120576112a(15) =469915012a(16) =1833813534a(17) =7164469910a(18) =28021000340a(19) =109699469798a(20) =429850240742
External references
- oeis: A322211