a(n) = [x^n*y^n/n!^2] (cosh(x)*cosh(y) + sinh(x) + sinh(y)) / (1 - sinh(x)*sinh(y)), for n >= 0.
A322195
a(n) = [x^n*y^n/n!^2] (cosh(x)*cosh(y) + sinh(x) + sinh(y)) / (1 - sinh(x)*sinh(y)), for n >= 0.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =52a(4) =977a(5) =29056a(6) =1257125a(7) =74628352a(8) =5823720257a(9) =578189787136
External references
- oeis: A322195