Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] 1 / (exp(x) + exp(y) - exp(x+y))^4.
A382736
Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] 1 / (exp(x) + exp(y) - exp(x+y))^4.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =4a(5) =0a(6) =0a(7) =4a(8) =4a(9) =0a(10) =0a(11) =4a(12) =44a(13) =4a(14) =0a(15) =0a(16) =4a(17) =124a(18) =124a(19) =4a(20) =0a(21) =0a(22) =4a(23) =284a(24) =1084a(25) =284a(26) =4a(27) =0a(28) =0a(29) =4
External references
- oeis: A382736