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A265981 as a triangular array

1
31
5231
111171231
2658312678091
555554115731389452741
11952555320641282056262258339231
263405165806181540743954893598936996052198071
573318702313323690436987686515155545324

A265981 as a square array

135112655119263573
1231175835554525554051653187023
11231267115733206418061815133236904
180913894282056407439543698768651
1527426225889359895155545324
1339233699605
1219807
1
135112655119263573
1231175835554525554051653187023
11231267115733206418061815133236904
180913894282056407439543698768651
1527426225889359895155545324
1339233699605
1219807
1