59225

Appears in sequences

• Expansion of e.g.f. 1/( cos(arctanh(x)) - sin(arctanh(x)) ).at n=7A184972
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 629", based on the 5-celled von Neumann neighborhood.at n=7A273296
• a(n) is the end square spiral number for a knight starting on square n moving on a board with squares numbered with the square of their distance from the 0-square origin and where the knight moves to the smallest numbered unvisited square; the smallest spiral number ordering is used if the distances are equal.at n=11A326931