107284domain: NAppears in sequencesNumber of (n+1)X(5+1) 0..1 arrays with each row and column divisible by 3, read as a binary number with top and left being the most significant bits, and rows and columns lexicographically nonincreasing.at n=11A263796a(n) = 108*n^2 - 104*n + 20 (n>=1).at n=31A304835