23 Jul
2020
23 Jul
'20
2:49 p.m.
https://community.wolfram.com/groups/-/m/t/2044450 Jim Williams recently finished a multi-year search for all simple perfect squared squares up to order 37. More details will eventually by at squaring.net. For orders 21 to 37, there are {1, 8, 12, 26, 160, 441, 1152, 3001, 7901, 20566, 54541, 144161, 378197, 990981, 2578081, 6674067, 17086918} such squares (A006983). Codes, numbers, and pictures at the link. --Ed Pegg Jr