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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 15 |
| 4 | 77 |
| 5 | 187 |
| 6 | 345 |
| 7 | 551 |
| 8 | 1107 |
| 9 | 1457 |
| 10 | 1855 |
| 11 | 2301 |
| 12 | 3337 |
| 13 | 4565 |
| 14 | 5251 |
| 15 | 6767 |
| 16 | 7597 |
| 17 | 8475 |
| 18 | 11397 |
| 19 | 12467 |
| 20 | 14751 |
| 21 | 18537 |
| 22 | 19895 |
| 23 | 21301 |
| 24 | 24257 |
| 25 | 25807 |
| 26 | 34277 |
| 27 | 36115 |
| 28 | 38001 |
| 29 | 41917 |
| 30 | 43947 |
| 31 | 46025 |
| 32 | 48151 |
| 33 | 52547 |
| 34 | 57135 |
| 35 | 64377 |
| 36 | 66887 |
| 37 | 80157 |
| 38 | 82955 |
| 39 | 85801 |
[2,5,15,77,187,345,551,1107,1457,1855,2301,3337, 4565,5251,6767,7597,8475,11397,12467,14751,18537, 19895,21301,24257,25807,34277,36115,38001,41917, 43947,46025,48151,52547,57135,64377,66887,80157, 82955,85801] |