128604

Appears in sequences

• Pairs (x, y), x < y, of f-amicable numbers where f(k) = floor(|k*sin(k)|) sorted by increasing y, then increasing x; f-amicable numbers are defined in A066511.at n=19A066573
• Number of (n+3) X 6 binary arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock.at n=22A188099
• Number of tilings of a 5 X n rectangle using n pentominoes of shapes T, W, Y, X.at n=21A366324