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A086786 as a triangular array

1
23
357
5111723
511172329
7376797127157
481485489493497501505
63570777985192399510671139
635707779851923995106711391211
199409619829103912491459166918792089
3841

A086786 as a square array

1235574816356351993841
35111137485707707409
7171767489779779619
232397493851851829
291274979239231039
1575019959951249
505106710671459
113911391669
12111879
2089
1235574816356351993841
35111137485707707409
7171767489779779619
232397493851851829
291274979239231039
1575019959951249
505106710671459
113911391669
12111879
2089