153498domain: NAppears in sequencesNumber of permutations of 1..n with displacements restricted to {-7,-6,-5,-4,-3,-2,0,1}.at n=22A189600Number of 4Xn 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=9A301887