57306domain: NAppears in sequencesa(n) = (2+n)*2^n-2-3*n.at n=11A131438Expansion of (1+2*x)/(1-x^4-2*x^3-2*x^2-x).at n=13A190667Number of 2-divided words of length n over a 4-letter alphabet.at n=8A210424Number of 6 X n 0..1 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.at n=8A223842