The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 19 |
| 5 | 33 |
| 6 | 42 |
| 7 | 73 |
| 8 | 259 |
| 9 | 271 |
| 10 | 297 |
| 11 | 303 |
| 12 | 324 |
| 13 | 392 |
| 14 | 623 |
| 15 | 1218 |
| 16 | 2801 |
| 17 | 4273 |
| 18 | 6071 |
| 19 | 6383 |
| 20 | 8699 |
| 21 | 8706 |
| 22 | 15139 |
| 23 | 17163 |
| 24 | 40491 |
| 25 | 54518 |
| 26 | 83976 |
| 27 | 89687 |
| 28 | 105284 |
| 29 | 168614 |
[1,2,3,19,33,42,73,259,271,297,303,324,392,623, 1218,2801,4273,6071,6383,8699,8706,15139,17163, 40491,54518,83976,89687,105284,168614] |