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A081281 as a triangular array

1
12
145
161514
18295441
11047126189122
11269238513648365
114953981101199821871094
11612561420574788753372903281
118159894350198581989927702240579842
1201971246

A081281 as a square array

11111111111
2468101214161820
51529476995125159197
14541262383986148941246
41189513110120573501
122648199847889858
3652187753319899
1094729027702
328124057
9842

A081281 as an upper right triangle

11111111111
2468101214161820
51529476995125159197
14541262383986148941246
41189513110120573501
122648199847889858
3652187753319899
1094729027702
328124057
9842

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Last modified March 28 08:02 EDT 2024. Contains 371236 sequences. (Running on oeis4.)