26547
domain: N
Appears in sequences
- Becomes prime or 4 after exactly 9 iterations of f(x) = sum of prime factors of x.at n=20A048131
- Number of compositions (ordered partitions) of n into parts 1, 2, and 5.at n=20A079971
- Engel expansion of Thue-Morse constant.at n=14A096394
- a(n) = 4*p(n-1)*p(n+1) - p(n)^2, where p(k) = k-th prime.at n=23A327447