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A138793 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 21 |
| 3 | 321 |
| 4 | 4321 |
| 5 | 54321 |
| 6 | 654321 |
| 7 | 7654321 |
| 8 | 87654321 |
| 9 | 987654321 |
| 10 | 1987654321 |
| 11 | 1101987654321 |
| 12 | 211101987654321 |
| 13 | 31211101987654321 |
| 14 | 4131211101987654321 |
| 15 | 514131211101987654321 |
| 16 | 61514131211101987654321 |
| 17 | 7161514131211101987654321 |
[1,21,321,4321,54321,654321,7654321,87654321, 987654321,1987654321,1101987654321, 211101987654321,31211101987654321, 4131211101987654321,514131211101987654321, 61514131211101987654321,7161514131211101987654321] |