23622320128
domain: N
Appears in sequences
- Solution to f(2) = 1, f(n) = sqrt(n) f(sqrt(n)) + n at values n = 2^2^i.at n=5A001367
- Denominators of Taylor series expansion of arcsin(x). Also arises from arccos(x), arccsc(x), arcsec(x), arcsinh(x).at n=16A002595
- Numbers k such that d(k)^4 divides k.at n=14A046756
- a(0)=2, a(1)=7, and a(n) = (3*n+1)*2^(n-1) if n > 1.at n=29A176662
- a(n) = 2^n * (1+n*(n+1)/2).at n=26A340257