76920

Appears in sequences

• Number of open knight's tour diagrams of a 3 X n chessboard that are symmetric under 180-degree rotation and have "type F": the endpoints occur in different columns and agree in color with the cells in the nearest corner.at n=18A169774
• Number of reduced 3 X 3 magilatin squares with magic sum n.at n=38A174020
• Irregular table read by rows: Take a decagon with all diagonals drawn, as in A333139. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.at n=22A332417
• Bemirp gaps: differences between consecutive bemirps.at n=16A333648