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A207621 as a triangular array

1
22
362
413102
52431142
6407657182
76216117691222
891308456340133262
912854610441045584183302
10174912217827942080924241342
112301452422467216370

A207621 as a square array

1234567891011
261324406291128174230
21031761613085469121452
21457176456104421784224
21891340104527946721
22213358420806370
226183924
230241
234
2
1234567891011
261324406291128174230
21031761613085469121452
21457176456104421784224
21891340104527946721
22213358420806370
226183924
230241
234
2