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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 7 |
| 4 | 40 |
| 5 | 47 |
| 6 | 87 |
| 7 | 134 |
| 8 | 221 |
| 9 | 3007 |
| 10 | 3228 |
| 11 | 6235 |
| 12 | 9463 |
| 13 | 15698 |
| 14 | 87953 |
| 15 | 103651 |
| 16 | 295255 |
| 17 | 694161 |
| 18 | 39168271 |
| 19 | 79030703 |
| 20 | 197229677 |
| 21 | 276260380 |
| 22 | 1578531577 |
| 23 | 1854791957 |
| 24 | 3433323534 |
| 25 | 5288115491 |
| 26 | 8721439025 |
| 27 | 118666822816 |
| 28 | 127388261841 |
| 29 | 246055084657 |
| 30 | 373443346498 |
[1,2,5,7,40,47,87,134,221,3007,3228,6235,9463, 15698,87953,103651,295255,694161,39168271, 79030703,197229677,276260380,1578531577, 1854791957,3433323534,5288115491,8721439025, 118666822816,127388261841,246055084657, 373443346498] |