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A056856 as a triangular array

1
12
299
6449664
242508751250625
1201644810018360194407776
7201234879576252105420175352947117649
5040104544840448346572880281601055129673400322097152

A056856 as a square array

1126241207205040
2944250164412348104544
996875810079576840448
641250183602521053465728
625194404201758028160
777635294710551296
1176497340032
2097152
1126241207205040
2944250164412348104544
996875810079576840448
641250183602521053465728
625194404201758028160
777635294710551296
1176497340032
2097152