10216206000
domain: N
Appears in sequences
- a(n) = (2n+1)! / 2^n.at n=7A007019
- Denominators of expansion of exp x / sin x.at n=11A007451
- Denominators of Taylor series for exp(x)*sin(x).at n=15A046979
- Denominators of Taylor series for exp(x)*cos(x).at n=15A046981
- Denominators of Taylor series for log(1/cos(x)). Also from log(cos(x)).at n=8A046991
- a(n) = n! / 2^floor(n/2).at n=15A090932
- Denominators of coefficients in the series for inverf(2x/sqrt(Pi)).at n=7A092677
- Denominators of coefficients in cosh(x) / sin(x) power series.at n=6A097235
- Denominators of the coefficients of the polynomials 1/Sum_{n>=1} x^(n-1)/((2*n)!/n!) = 2*exp(-x/4)*sqrt(x)/ (sqrt(Pi)*erf(sqrt(x)/2)).at n=6A154242
- Denominators of coefficients in Taylor series expansion of log(cosec(x)*tanh(x)).at n=8A202383
- Greatest 7th-power-free divisor of n!.at n=14A248775
- Regular triangle whose rows are the coefficients of the Dominici expansion of f(t,x) = (1/2)*(1 - t^2)^(-x) with respect to t.at n=35A320842
- a(n) = (2*n-1)! / 2^(n-1) if n > 0 and a(0) = 1.at n=8A327021
- T(n, k) = (1/n) * Sum_{d|n} phi(d) * A241171(n/d, k) for n >= 1, T(0, k) = 0^k. Triangle read by rows for 0 <= k <= n.at n=44A327027
- Number of distinct permutations of the terms of the n-th row of Pascal's triangle with alternating signs.at n=14A377825