558769domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes from merging of 6 successive digits in decimal expansion of Zeta(2) or (Pi^2)/6.at n=9A105379Number of nX3 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=13A316171Prime numbersat n=45978