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A124237 as a triangular array

1
21
451
81781
164939111
3212915070141
64321501338110171
12876915241375640159201
25617934339497330751083217231
51240971176216508

A124237 as a square array

1248163264128256512
15174912932176917934097
18391505011524433911762
111703381375497316508
1141106403075
1171591083
120217
123
1
1248163264128256512
15174912932176917934097
18391505011524433911762
111703381375497316508
1141106403075
1171591083
120217
123
1