Multimagic square 16, 25, 36, 49, ... Sum of Squares 0, 1, 5, 14, 30, 55, 91, 140, 204, 285, ... )number of units in a square-based pyramid) The bimagic series is the 1st, 4th, 9th in this series (divided by 1, 2, 3, n) etc. so values for the rows and columns in order-1, order-2, order-3 Bimagic squares would be 1, 15, 95, 374, 1105, 2701, 5775, 11180, ... The trimagic series would be related in the same way to the hyper-pyramidal sequence of nested cubes. Cubes 0, 1, 8, 27, 64, 125, 216, ... Sum of Cubes 0, 1, 9,
1:64 scale layouts. Since the 1930s, O scale (1:48) train manufacturers, including Gilbert, Lionel and Marx, have produced bargain or introductory lines of undersized toy trains to run on O-gauge track with very tight curves, known as 0-27 track. Though sold as O gauge, the bodies of these undersized cars and engines were often scaled to 1:64 proportions. The origins of Gilbert's S-gauge equipment can be traced to its American Flyer O-27 line of 1938 and after. Kit manufacturers have used 1:64 as a scale for boats and small ships. 1:64 scale 1:64 scale is a traditional scale for models and miniatures,