181451domain: NAppears in sequencesa(n) = (12*n+1)*(12*n+11).at n=35A001538Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 87 ones.at n=16A031855Partial sums of A008531, or crystal ball sequence for {A_4}* lattice.at n=19A222408Quasi-Carmichael numbers to exactly three bases.at n=32A257753