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A306309 as a triangular array

1
11
121
1331
14641
151151
1662661
1712881271
181921621981
1927211818212791
113648393639483611
12378487757587843721

A306309 as a square array

111111111111
12345678912
136161219273637
141282214884
156816183987
16122183675
1719213975
18274887
193684
1137
12
1

A306309 as an upper right triangle

111111111111
12345678912
136161219273637
141282214884
156816183987
16122183675
1719213975
18274887
193684
1137
12
1

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)