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A088898 as a triangular array

1
39
51525
7213145
927415969
1133516987109
13396183105127145
15416793119141171193
174777103137159193219249
195387117147181215241275305
215997131165203

A088898 as a square array

13579111315171921
9152127333941475359
253141516167778797
4559698393103117131
6987105119137147165
109127141159181203
145171193215
193219241
249275
305
13579111315171921
9152127333941475359
253141516167778797
4559698393103117131
6987105119137147165
109127141159181203
145171193215
193219241
249275
305