1596672000
domain: N
Appears in sequences
- a(n) = phi(binomial(2n, n)).at n=17A066973
- a(n) = (n^2-1)*n!/3.at n=10A090672
- Vandermonde determinant of (1,2,3,...,F(n+1)), where F=A000045 (Fibonacci numbers).at n=6A203311
- a(n) = lcm(1,2,...,n)*a(floor(n/2))^2 for n > 0, a(0) = 1.at n=11A230714
- E.g.f. A(x) satisfies A(x) = exp(x^3 * (1+x)^2 * A(x)).at n=11A389787