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A253609 as a triangular array

2
43
659
14191115
2957944022
6517148326912423
13754925491996107118730
2771786

A253609 as a square array

246142965137277
3519571715491786
911944832549
15402691996
221241071
23187
30

A253609 as an upper right triangle

246142965137277
3519571715491786
911944832549
15402691996
221241071
23187
30

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Last modified March 29 04:59 EDT 2024. Contains 371264 sequences. (Running on oeis4.)