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A309287 as a triangular array

1
11
221
2321
43321
254321
6654321
47654321
667654321
4877654321
1010987654321
41110987654321
1291110987654321
613121110987654321

A309287 as a square array

1122426464104126
1233567681011913
123456779101112
1234567891011
12345678910
123456789
12345678
1234567
123456
12345
1234
123
12
1

A309287 as an upper right triangle

1122426464104126
1233567681011913
123456779101112
1234567891011
12345678910
123456789
12345678
1234567
123456
12345
1234
123
12
1

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)