60776

Appears in sequences

• Numbers k such that 10^k + 3 is prime.at n=21A049054
• Half the number of (n+1) X 2 binary arrays with no 2 X 2 subblock containing exactly one 1.at n=8A184189
• T(n,k)=Half the number of (n+1)X(k+1) binary arrays with no 2X2 subblock containing exactly one 1.at n=36A184197
• Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal or vertical neighbor, and containing the value n(n+1)/2-2.at n=25A211905