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A255660 as a triangular array

16
6464
255256256
968101610241024
33403692404840964096
103201175214192161281638416384
28722330424265354560642576553665536
7292083752112196155144209412256012262144262144
171106195020

A255660 as a square array

16642559683340103202872272920171106
6425610163692117523304283752195020
256102440481419242653112196
102440961612854560155144
40961638464257209412
1638465536256012
65536262144
262144
16642559683340103202872272920171106
6425610163692117523304283752195020
256102440481419242653112196
102440961612854560155144
40961638464257209412
1638465536256012
65536262144
262144