51557716
domain: N
Appears in sequences
- Recurrence a(n)*a(n-2) = a(n-1)*(a(n-1) + 3) with a(0) = 1, a(1) = 4.at n=9A182432
- Number of nX7 binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=5A228795
- Number of 6Xn binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=6A228801