163775
domain: N
Appears in sequences
- Number of nonempty subsequences {s(k)} of 1..n such that the difference sequence is palindromic.at n=28A053599
- Number of divisor chains of length n which begin with n ("anchored" divisor chains).at n=36A094097
- Number of divisor chains of length 2n+1 which are both cyclic and anchored.at n=18A094099
- a(n) = 5*2^n - 4*n - 5.at n=14A126284
- Composites in A127345.at n=31A127347