158457domain: NAppears in sequencesNumbers n such that n-th and (n+1)-th primes are in A125146.at n=18A128120a(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=33A353447