G.f.: exp( Sum_{n>=1} A322205(n)*x^n/n ), where A322205(n) is the coefficient of x^(2*n)*y^n/n in Sum_{n>=1} -log(1 - (x^n + y^n)).
A322206
G.f.: exp( Sum_{n>=1} A322205(n)*x^n/n ), where A322205(n) is the coefficient of x^(2*n)*y^n/n in Sum_{n>=1} -log(1 - (x^n + y^n)).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =14a(4) =63a(5) =294a(6) =1526a(7) =8157a(8) =45332a(9) =257378a(10) =1489539a(11) =8744722a(12) =51965701a(13) =311915649a(14) =1888382937a(15) =11517313486a(16) =70699038868a(17) =436454255701
External references
- oeis: A322206