37976

Appears in sequences

• Number of n X n binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally.at n=3A189152
• Number of nX4 binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally.at n=3A189156
• T(n,k)=Number of nXk binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally.at n=24A189161
• Number of n X n binary arrays without the pattern 1 0 0 1 diagonally, vertically or horizontally.at n=3A189773
• Number of n X 4 binary arrays without the pattern 1 0 0 1 diagonally, vertically or horizontally.at n=3A189774
• T(n,k)=Number of nXk binary arrays without the pattern 1 0 0 1 diagonally, vertically or horizontally.at n=24A189779
• a(n) = 31*n^2 + 1.at n=35A247155
• a(n) = (n + 1)*(2*n + 1)*(4*n + 9)/3.at n=23A269342
• Nonprime numbers k such that k divides sigma(k^2) - 1.at n=12A283744
• Numbers k such that (16*10^k + 107)/3 is prime.at n=20A295522
• Number of polygons formed outside an n X n square when connecting all 4n points on the perimeter of the square by infinite lines.at n=9A345648