116850

Appears in sequences

• Number of (n+1) X 2 binary arrays with no 2 X 2 subblock determinant equal to any horizontal or vertical neighbor 2 X 2 subblock determinant.at n=10A185459
• a(1) = 1; for n > 1, a(n) = smallest integer > a(n-1) such that a(n)*a(i)+1 is semiprime for all 1 <= i <= n-1.at n=10A219953
• Number of n X 2 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, vertically or antidiagonally.at n=13A232935
• Number of length n 0..2 arrays with no pair in any consecutive three terms totalling exactly 2.at n=28A245989