a(n) = (n!)^2 * [(x*y)^n] Product_{k>=1} (1 + (x^k + y^k)/k!).
A382959
a(n) = (n!)^2 * [(x*y)^n] Product_{k>=1} (1 + (x^k + y^k)/k!).
Terms
- a(0) =1a(1) =0a(2) =0a(3) =6a(4) =8a(5) =130a(6) =342a(7) =2590a(8) =21240a(9) =167730a(10) =1874930a(11) =46128610a(12) =417338462a(13) =5163377570a(14) =542567363366
External references
- oeis: A382959