SPSSs Order 40;

Ian Gambini found the first 2 SPSSs of this order in the 1990s. Jim Williams found 802968 in 2013. Brian Trial found 513 in 2014.

It is estimated there are approximately 3.2 x 10^8 SPSSs in order 40.

A listing of the known tablecodes is available The file size is 63.5Mb