The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 31 |
| 3 | 131 |
| 4 | 1319 |
| 5 | 21319 |
| 6 | 213193 |
| 7 | 12213193 |
| 8 | 122131939 |
| 9 | 1122131939 |
| 10 | 112213193957 |
| 11 | 27112213193957 |
| 12 | 271122131939573 |
| 13 | 3271122131939573 |
| 14 | 327112213193957339 |
| 15 | 2327112213193957339 |
| 16 | 232711221319395733969 |
| 17 | 13232711221319395733969 |
[3,31,131,1319,21319,213193,12213193,122131939, 1122131939,112213193957,27112213193957, 271122131939573,3271122131939573, 327112213193957339,2327112213193957339, 232711221319395733969,13232711221319395733969] |