125687domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of permutations in S_n avoiding 1{bar 5}234 (i.e., every occurrence of 1234 is contained in an occurrence of a 15234).at n=9A137541Primes of the form 7n^2 - 5.at n=26A201851Primes equal to a centered heptagonal number plus 1.at n=30A285811Prime numbersat n=11793