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A272904 as a triangular array

1
24
368
591115
712141923
101618242834
13202229334046
1725273539475361
213032414554606977
26363848526268788696
314244555970768795106116

A272904 as a square array

12357101317212631
46912162025303642
81114182227323844
1519242935414855
23283339455259
344047546270
4653606876
61697887
778695
96106
116
12357101317212631
46912162025303642
81114182227323844
1519242935414855
23283339455259
344047546270
4653606876
61697887
778695
96106
116