-13568
domain: Z
Appears in sequences
- Tan(sin(x)^2) = 2/2!*x^2 - 8/4!*x^4 + 272/6!*x^6 - 13568/8!*x^8 + ...at n=4A009675
- Duplicate of A009675.at n=3A012296
- Expansion of e.g.f. arctanh(sin(x)*sin(x)), even powers only.at n=4A012301
- Expansion of e.g.f. log(sech(x) + tanh(x)).at n=8A013208
- Determinant of the n-th principal submatrix of A204237.at n=5A204238
- E.g.f. satisfies A(x) = exp(x + x / A(x)).at n=6A362693
- a(n) = Sum_{k=0..n} k^4 * (-1)^k * 3^(n-k) * binomial(n,k).at n=8A383151