362291domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form concatenation(A141468(k), k).at n=22A154506Primes of the form 7*p^2+7*p-1 (with p=prime).at n=15A171138Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=9A207495Prime numbersat n=30927