39669

Appears in sequences

• Numbers k such that sigma(k) = sigma(k+5).at n=14A015865
• Numbers n such that (n^6 + 1091)/4 is prime.at n=19A181112
• Number of (n+2)X3 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..2 introduced in row major order.at n=1A204310
• Number of (n+2) X 4 0..2 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..2 introduced in row major order.at n=0A204311
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..2 introduced in row major order.at n=1A204314
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..2 introduced in row major order.at n=2A204314
• Expansion of (1/(1 - x))*Product_{k>=1} (1 - x^prime(k))/(1 - x^k).at n=52A303663