124511

Appears in sequences

• Binomial transform of poly-Bernoulli numbers A027649.at n=8A085350
• Main diagonal of triangular array T: T(j,1) = 1 for ((j-1) mod 6) < 3, else 0; T(j,k) = T(j-1,k-1) + T(j,k-1) for 2 <= k <= j.at n=18A129339
• Number of ways of placing kings with no more than 2 mutual attacks on an n X n chessboard.at n=5A143875
• a(n) = 2^n - A108411(n).at n=17A167936