Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] exp(x+y) / (exp(x) + exp(y) - exp(x+y))^3.
A382673
Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] exp(x+y) / (exp(x) + exp(y) - exp(x+y))^3.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =10a(8) =10a(9) =1a(10) =1a(11) =22a(12) =52a(13) =22a(14) =1a(15) =1a(16) =46a(17) =208a(18) =208a(19) =46a(20) =1a(21) =1a(22) =94a(23) =736a(24) =1372a(25) =736a(26) =94a(27) =1a(28) =1a(29) =190
External references
- oeis: A382673