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A274228 as a triangular array

2
32
442
5852
6121262
718211672
82436322082
9325460452492
104080100906028102
11501101601651267732112
12601502402802521689636122
137219535045544836421611740132

A274228 as a square array

2345678910111213
2481218243240506072
251221365480110150195
26163260100160240350
27204590165280455
282460126252448
292877168364
2103296216
21136117
21240
213
2
2345678910111213
2481218243240506072
251221365480110150195
26163260100160240350
27204590165280455
282460126252448
292877168364
2103296216
21136117
21240
213
2