1232896

Appears in sequences

• Stirling2 triangle with scaled diagonals (powers of 8).at n=23A075503
• Third column of triangle A075503.at n=4A076003
• Number of ways to place 3 nonattacking queens on an n X n toroidal board.at n=15A172518
• Expansion of x*(1 + x)/(1 - 2*x)^3.at n=14A276289
• a(n) = n*2^(n-1) + binomial(n,2)*2^(n-2) + binomial(n,3)*2^(n-3).at n=14A387185