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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 4 |
| 6 | 6 |
| 7 | 13 |
| 8 | 17 |
| 9 | 34 |
| 10 | 101 |
| 11 | 146 |
| 12 | 325 |
| 13 | 1195 |
| 14 | 2277 |
| 15 | 6460 |
| 16 | 27376 |
| 17 | 61961 |
| 18 | 214755 |
| 19 | 1116386 |
| 20 | 3024411 |
| 21 | 12485340 |
| 22 | 79544755 |
| 23 | 263062079 |
| 24 | 1324332721 |
| 25 | 10146383904 |
| 26 | 40752385354 |
| 27 | 249319033030 |
| 28 | 2314746073775 |
| 29 | 11234416498141 |
| 30 | 83071107149999 |
[1,2,1,1,3,4,6,13,17,34,101,146,325,1195,2277, 6460,27376,61961,214755,1116386,3024411,12485340, 79544755,263062079,1324332721,10146383904, 40752385354,249319033030,2314746073775, 11234416498141,83071107149999] |