23830

Appears in sequences

• McKay-Thompson series of class 21C for the Monster group.at n=25A058565
• Number of binary strings of length n with no substrings equal to 000 or 011.at n=31A164315
• Expansion of x*(1+x+x^2) / ( (x-1)*(x^3+x^2-1) ).at n=31A171861
• Number of ways to place 3 nonattacking knights on a 3 X n board.at n=18A172212
• Number of (n+1) X (4+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).at n=4A234560
• Number of (n+1) X (5+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).at n=3A234561
• T(n,k) is the number of (n+1) X (k+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).at n=31A234564
• T(n,k) is the number of (n+1) X (k+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).at n=32A234564
• Expansion of eta(q^6)^3 * eta(q^10)^3 / (eta(q^2) * eta(q^3)^2 * eta(q^5)^2 * eta(q^30)) in powers of q.at n=46A257632