4951496domain: NAppears in sequencesa(n) = Sum_{i=1..n} binomial(i+1,2)^5.at n=5A085440Number of (n+1)X(2+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically.at n=17A253692