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A254242 as a triangular array

512
26162616
10684920910684
41140383923839241140
150016167637195528167637150016
514920637570970333970333637570514920
1700100222805037022845606832370228422280501700100
54873567570126

A254242 as a square array

5122616106844114015001651492017001005487356
261692093839216763763757022280507570126
10684383921955289703333702284
411401676379703335606832
1500166375703702284
5149202228050
1700100
5122616106844114015001651492017001005487356
261692093839216763763757022280507570126
10684383921955289703333702284
411401676379703335606832
1500166375703702284
5149202228050
1700100