72407728

Appears in sequences

• a(n) = Sum_{k=1..n-1} k*A110971(n,k).at n=22A152086
• Number of zig-zag paths from top to bottom of an n X n square whose color is that of the top right corner.at n=23A153334
• Number of zig-zag paths from top to bottom of an n X n square whose color is not that of the top right corner.at n=23A153335
• Number of zig-zag paths from top to bottom of a 2n by 2n square whose color is that of the top right corner.at n=11A153336