E.g.f.: S(x,y) = (sinh(x) + sinh(y)) / (1 - sinh(x)*sinh(y)), where S(x,y) = Sum_{n>=0} Sum_{k=0..2*n+1} T(n,k) * x^(2*n+1-k)*y^k/((2*n+1-k)!*k!), as a triangle of coefficients T(n,k) read by rows.
A322194
E.g.f.: S(x,y) = (sinh(x) + sinh(y)) / (1 - sinh(x)*sinh(y)), where S(x,y) = Sum_{n>=0} Sum_{k=0..2*n+1} T(n,k) * x^(2*n+1-k)*y^k/((2*n+1-k)!*k!), as a triangle of coefficients T(n,k) read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =1a(6) =1a(7) =8a(8) =14a(9) =14a(10) =8a(11) =1a(12) =1a(13) =32a(14) =122a(15) =200a(16) =200a(17) =122a(18) =32a(19) =1a(20) =1a(21) =128a(22) =1094a(23) =3104a(24) =4808a(25) =4808a(26) =3104a(27) =1094a(28) =128a(29) =1
External references
- oeis: A322194