G.f.: exp( Sum_{n>=1} A322203(n)*x^n/n ), where A322203(n) is the coefficient of x^n*y^n/n in Sum_{n>=1} -log(1 - (x^n + y^n)).
A322204
G.f.: exp( Sum_{n>=1} A322203(n)*x^n/n ), where A322203(n) is the coefficient of x^n*y^n/n in Sum_{n>=1} -log(1 - (x^n + y^n)).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =20a(5) =54a(6) =168a(7) =518a(8) =1702a(9) =5672a(10) =19413a(11) =67329a(12) =236994a(13) =842362a(14) =3022320a(15) =10924142a(16) =39749219a(17) =145457241a(18) =534996370a(19) =1976582432a(20) =7332199623a(21) =27298096431a(22) =101968071485a(23) =382033462335
External references
- oeis: A322204