Simple Perfect Squared Squared Squares; Orders 21 to 30+

Thise collection of squared squares has been assembled from many sources, with material from published and unpublished collections, journals, books, and recent computer searches. The catalogue is presented, arranged by order 21 to 30+ in javascript viewer and pdf. Other selections of this collection are available for download.

The following publications have featured extensive collections of Simple Perfect Squared Squares;

• 'Squared Squares, Who's Who & What's What', Jasper Dale Skinner, II, Ph.D.
• C.J. Bouwkamp and A.J.W. Duijvestijn, Catalogue of simple perfect squared squares of orders 21 through 25, EUT Report 92-WSK-03, Eindhoven, The Netherlands, 207 pp.
• A. J. W. Duijvestijn: Simple perfect squared squares and 2 x 1 squared rectangles of order 26. Math. Comput. 65(215): 1359-1364 (1996)
• C.J. Bouwkamp, Simple Perfect Squared Squares of order 27, EUT Report 98-WSK-01 Eindhoven, July 1998