158680

Appears in sequences

• Number of strong starters in cyclic group of order 2n+1.at n=11A001443
• Number of nX3 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=12A301959
• The number of steps for a knight to be trapped when moving on a spirally numbered hexagonal board to the lowest available unvisited cell and starting at cell n.at n=30A333683
• a(n) is the permanent of the Vandermonde matrix of the divisors of n.at n=9A389590