65988

Appears in sequences

• Total area of all deco polyominoes of height n. A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.at n=6A121553
• List of free corner-connected polyominoes in binary code (as defined in A246521), ordered first by number of bits, then by value of the binary code.at n=20A364928