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A171651 as a triangular array

1
21
541
131561
35523081
9617513050101
26757652526075121
750186920161225455105141
21236000747653762450728140161
60461910727000224281209644101092180181

A171651 as a square array

12513359626775021236046
1415521755761869600019107
16301305252016747627000
18502601225537622428
11075455245012096
1121057284410
1141401092
116180
118
1
12513359626775021236046
1415521755761869600019107
16301305252016747627000
18502601225537622428
11075455245012096
1121057284410
1141401092
116180
118
1