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A097290 as a triangular array

1
23
546
81179
1316121014
182123171519
25283024222026
3235373931292733
414446484038363442
50535557594947454351
6164666870605856545262
727577798183

A097290 as a square array

12581318253241506172
34111621283544536475
671223303746556677
91017243948576879
1415223140597081
19202938496083
2627364758
33344556
424354
5152
62
12581318253241506172
34111621283544536475
671223303746556677
91017243948576879
1415223140597081
19202938496083
2627364758
33344556
424354
5152
62