45060

Appears in sequences

• Dying rabbits: a(n) = a(n-1) + a(n-2) - a(n-12).at n=24A023442
• Numbers k such that k | sigma_6(k) + phi(k)^6.at n=21A055700
• Numbers k such that k+1, 2k+1, 3k+1, 4k+1 are all prime.at n=16A237189
• a(n) is the number of tetrapods standing on the four edges of an n X n grid, so that no two feet are the same distance apart and no foot is on a corner. Tetrapods with congruent footprints are counted only once.at n=24A353447