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A186786 as a triangular array

0
580580
2366113542366
22236635046350422236
118616739334696596739334118616
891506849903817120960171209608499038891506
548904897501656281080458658080772281080458975016565489048
38326452

A186786 as a square array

0580236622236118616891506548904838326452
5801135463504739334849903897501656
23666350469659617120960281080458
2223673933417120960658080772
1186168499038281080458
89150697501656
5489048
0580236622236118616891506548904838326452
5801135463504739334849903897501656
23666350469659617120960281080458
2223673933417120960658080772
1186168499038281080458
89150697501656
5489048