211896
domain: N
Appears in sequences
- a(n) = floor(4th elementary symmetric function of Sum_{j=1..k} 1/j, k = 1,2,...,n).at n=15A025214
- Numbers n such that n=phi(n/d_1)+phi(n/d_2)+...+phi(n/d_k) where d_1 d_2 ... d_k is the decimal expansion of n.at n=1A158993
- a(1) = 1, then a(n) is the least integer > a(n-1) such that n is the maximum element in the continued fraction for 1/a(1) + 1/a(2) + ... + 1/a(n).at n=36A174604