126150domain: NAppears in sequencesNumber of 5 X n binary arrays without the pattern 0 1 diagonally, vertically, antidiagonally or horizontally.at n=27A188556Smallest area A of Heron triangles with sides (a, b, c) in arithmetic progression of the form b - d(n), b, b + d(n), where d(n) = A091998(n) = 12*n +- 1.at n=24A229098