62824
domain: N
Appears in sequences
- Numbers n such that 8*10^n + R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=12A103071
- Number of 3-step knight's tours on an (n+2) X (n+2) board summed over all starting positions.at n=33A186852
- Number of (n+2)X3 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..1 introduced in row major order.at n=13A204747