E.g.f.: C(x,k) = cn( i * Integral C(x,k) dx, k), where C(x,k) = Sum_{n>=0} Sum_{j=0..n} T(n,j) * x^(2*n)*k^(2*j)/(2*n)!, as a triangle of coefficients T(n,j) read by rows.
A325221
E.g.f.: C(x,k) = cn( i * Integral C(x,k) dx, k), where C(x,k) = Sum_{n>=0} Sum_{j=0..n} T(n,j) * x^(2*n)*k^(2*j)/(2*n)!, as a triangle of coefficients T(n,j) read by rows.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =5a(4) =4a(5) =0a(6) =61a(7) =148a(8) =16a(9) =0a(10) =1385a(11) =6744a(12) =2832a(13) =64a(14) =0a(15) =50521a(16) =410456a(17) =383856a(18) =47936a(19) =256a(20) =0a(21) =2702765a(22) =32947964a(23) =54480944a(24) =17142784a(25) =780544a(26) =1024a(27) =0a(28) =199360981a(29) =3402510924
External references
- oeis: A325221