55517

Appears in sequences

• Number of n X 4 binary arrays with every 1 immediately preceded by 0 to the left or above.at n=4A203358
• Number of nX5 binary arrays with every 1 immediately preceded by 0 to the left or above.at n=3A203359
• T(n,k)=Number of nXk binary arrays with every 1 immediately preceded by 0 to the left or above.at n=31A203362
• T(n,k)=Number of nXk binary arrays with every 1 immediately preceded by 0 to the left or above.at n=32A203362
• Nonpalindromic positive integers k such that the absolute value of k^2 - reverse(k)^2 is a square.at n=10A256515