75089domain: NAppears in sequencesa(n) = 52*n^2 + 1.at n=38A158644Numbers n such that m=(n^2+1)/2, p=(m^2+1)/2 and q=(p^2+1)/2 are all prime.at n=32A188546Number of nX2 0..1 arrays with every element equal to 1, 2 or 3 king-move adjacent elements, with upper left element zero.at n=9A297817