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A156708 as a triangular array

1
21
441
81151
16261661
3257422271
6412099642981
128247219163933791
25650246638225613046101
512101396884863838617656111

A156708 as a square array

1248163264128256512
141126571202475021013
15164299219466968
162264163382848
172993256638
1837130386
1946176
11056
111
1
1248163264128256512
141126571202475021013
15164299219466968
162264163382848
172993256638
1837130386
1946176
11056
111
1