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A128442 as a triangular array

1
22
442
5654
78885
8101112118
9121416161611
1114162022242216
121619242832333222
14182228334045484532
1520253239485664676445
162228364556678090

A128442 as a square array

12457891112141516
246810121416182022
25811141619222528
4812162024283236
511162228333945
8162432404856
112233455667
1632486480
22456790
3264
45
12457891112141516
246810121416182022
25811141619222528
4812162024283236
511162228333945
8162432404856
112233455667
1632486480
22456790
3264
45