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A155940 as a triangular array

1
22
234
3445
34566
455677
4567789
566788910
567889101011
67789910111112
67899101111121313
78891010111212131414
7

A155940 as a square array

1223344556677
23445566778
4455667788
566778899
677889910
788991010
9910101111
1010111112
11111212
121313
1314
14

A155940 as an upper right triangle

1223344556677
23445566778
4455667788
566778899
677889910
788991010
9910101111
1010111112
11111212
121313
1314
14

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Last modified April 29 00:08 EDT 2024. Contains 372097 sequences. (Running on oeis4.)