38969

Appears in sequences

• sin(arcsinh(x)+tan(x))=2*x-7/3!*x^3+17/5!*x^5-1761/7!*x^7...at n=4A013092
• Expansion of e.g.f.: exp(tanh(x)+arcsin(x))=1+2*x+4/2!*x^2+7/3!*x^3+8/4!*x^4+17/5!*x^5...at n=9A013131
• Nearest integer to 1/(Sum_{k>=n} 1/k^4).at n=23A083559
• Partial sums of A030279.at n=6A174654
• a(n) = Sum_{k=1..n} binomial(2*k, n-k)^2 * n/k.at n=7A198059