1307739domain: NAppears in sequencesa(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4).at n=22A145028Number of nX7 0..1 arrays with every element equal to 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=10A298962