268909domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 7n^2 - 3.at n=22A201849Number of (n+1) X (1+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0011 or 0101.at n=16A259215Prime numbersat n=23554