6198727824

Appears in sequences

• Real part of (n + n*i)^n.at n=9A121625
• One quarter the number of nX3 1..4 arrays with no two neighbors of any element equal to each other.at n=17A183355
• Number of 3Xn binary arrays without the pattern 0 1 diagonally or antidiagonally.at n=19A188825
• Number of (n+1)X2 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=8A203819
• a(1) = 1, a(2) = 2, a(3) = 5; thereafter a(n) = 2 * Sum_{k=1..n-1} a(k).at n=21A257970
• Integers k such that both k and k^3-1 are the sum of two positive cubes (see A003325).at n=19A271717
• Imaginary part of (n + n*i)^n where i = sqrt(-1).at n=9A370359