123803domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that 24*p-1, 24*p+1 and 30*p-1, 30*p+1 are twin primes.at n=13A138695Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=11A306168Prime numbersat n=11634