80400

Appears in sequences

• Number of n X 7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 1 1 vertically.at n=7A209223
• Number of n-colorings of the icosahedral graph.at n=5A218514
• List of numbers n such that A039654(n) reaches a new record high.at n=38A292113
• G.f. A(x) satisfies: A(x) = x + x^2 * exp(3 * Sum_{k>=1} (-1)^(k+1) * A(x^k) / k).at n=11A345244