26788

Appears in sequences

• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2 + (x+497)^2 = y^2.at n=23A207077
• Number of connected achiral planar maps with an external face and n internal triangular faces.at n=10A378341
• Number of closed knight's tours in the first 2n cells of a 3 X ceiling(2n/3) board.at n=12A383660