391042domain: NAppears in sequencesTriangle T, read by rows, where column k of T = column 0 of matrix power T^(k+1) for k>0, with column 0 of T = column 1 of T^2 (shifted).at n=28A152406Column 0 of triangle A152406; also, column 1 of matrix square of A152406.at n=7A152407