54969domain: NAppears in sequencesExpansion of 1/(1 - Sum_{k>=1} x^prime(prime(k))).at n=59A281422Number of nX6 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero.at n=21A303680One third the number of solid partitions of n with 6 parts.at n=24A389773