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A128177 as a triangular array

1
21
421
6421
96421
1296421
161296421
20161296421
2520161296421
302520161296421
36302520161296421
4236302520161296421

A128177 as a square array

1246912162025303642
12469121620253036
124691216202530
1246912162025
12469121620
124691216
1246912
12469
1246
124
12
1

A128177 as an upper right triangle

1246912162025303642
12469121620253036
124691216202530
1246912162025
12469121620
124691216
1246912
12469
1246
124
12
1

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Last modified August 17 13:03 EDT 2024. Contains 375210 sequences. (Running on oeis4.)