266372
domain: N
Appears in sequences
- a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = n - 1 - 2^p and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = a(2) = a(3) = 1.at n=19A049934
- a(n) = (1/n) * Sum_{k=1..n} n^(k/gcd(n, k)).at n=7A332653
- a(n) = Sum_{k=1..n} gcd(k,n)^(n-2).at n=7A342432
- a(n) = Sum_{k=1..n} gcd(k, n)^6.at n=7A343508