267857domain: NPropertiesPrimalityPrimeyesAppears in sequencesDiagonal sum of right-justified array T given by A027023.at n=15A027038Number of (n+1) X (7+1) 0..1 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.at n=17A251127Prime numbersat n=23477