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A227581 as a triangular array

1
22
222
3333
33333
444444
4444444
55555555
655555556
6666666666
76666666667
777777777777
87777777

A227581 as a square array

1223344566778
223344556677
23344556677
3344556677
344556677
44556677
4556677
556677
6667
667
77
7

A227581 as an upper right triangle

1223344566778
223344556677
23344556677
3344556677
344556677
44556677
4556677
556677
6667
667
77
7

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Last modified April 16 18:02 EDT 2024. Contains 371750 sequences. (Running on oeis4.)