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| n | a(n) |
|---|---|
| 1 | 20 |
| 2 | 30 |
| 3 | 45 |
| 4 | 68 |
| 5 | 102 |
| 6 | 153 |
| 7 | 229 |
| 8 | 344 |
| 9 | 516 |
| 10 | 774 |
| 11 | 1161 |
| 12 | 1741 |
| 13 | 2612 |
| 14 | 3918 |
| 15 | 5877 |
| 16 | 8815 |
| 17 | 13223 |
| 18 | 19834 |
| 19 | 29751 |
| 20 | 44627 |
| 21 | 66940 |
| 22 | 100410 |
| 23 | 150615 |
| 24 | 225923 |
| 25 | 338884 |
| 26 | 508326 |
| 27 | 762489 |
| 28 | 1143734 |
| 29 | 1715601 |
| 30 | 2573401 |
| 31 | 3860102 |
| 32 | 5790153 |
| 33 | 8685229 |
| 34 | 13027844 |
[20,30,45,68,102,153,229,344,516,774,1161,1741, 2612,3918,5877,8815,13223,19834,29751,44627,66940, 100410,150615,225923,338884,508326,762489,1143734, 1715601,2573401,3860102,5790153,8685229,13027844] |