119089domain: NPropertiesPrimalityPrimeyesAppears in sequencesLet p(k) = k-th prime; sequence gives primes q of the form q = k*p(k) + 1 for some k.at n=15A096064Number of ways to tile a "central bump" strip of length n with 1 X 1 squares and 1 X 3 rectangles.at n=26A385933Prime numbersat n=11223