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A081517 as a triangular array

1
12
124
1235
12347
123458
1234568
12345679
1234567811
12345678914
1234567891012
123456789101113
12345678910111219

A081517 as a square array

1111111111111
222222222222
43333333333
5444444444
755555555
86666666
8777777
988888
119999
14101010
121111
1312
19

A081517 as an upper right triangle

1111111111111
222222222222
43333333333
5444444444
755555555
86666666
8777777
988888
119999
14101010
121111
1312
19

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Last modified September 3 23:03 EDT 2024. Contains 375679 sequences. (Running on oeis4.)