65840
domain: N
Appears in sequences
- a(n) = Sum_{d|8} phi(d)*n^(8/d).at n=4A054607
- a(n) = Sum_{d|n} phi(d)*4^(n/d).at n=8A054611
- Triangle T(n,k) = Sum_{d|n} phi(d)*k^(n/d).at n=31A054618
- a(n) = 2^n + n*(n+3).at n=16A131951
- Starts of runs of 3 consecutive base phi Niven numbers (A334308).at n=5A334310
- a(n) = Sum_{d|n} phi(n/d) * (2^d - 1).at n=15A346558
- Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 1 + 3*x, p(n,x) = u*p(n-1,x) + v*p(n-2,x) for n >= 3, where u = p(2,x), v = 1 - x^2.at n=51A368150