20250624domain: NAppears in sequencesNumber of (n+1) X (n+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly one clockwise edge increases.at n=13A207042Number of subsets of {1..n} that cannot be linearly combined using nonnegative coefficients to obtain n.at n=38A365380