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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 23 |
| 2 | 85 |
| 3 | 231 |
| 4 | 535 |
| 5 | 1124 |
| 6 | 2198 |
| 7 | 4072 |
| 8 | 7228 |
| 9 | 12392 |
| 10 | 20632 |
| 11 | 33506 |
| 12 | 53252 |
| 13 | 83048 |
| 14 | 127359 |
| 15 | 192401 |
| 16 | 286751 |
| 17 | 422151 |
| 18 | 614552 |
| 19 | 885480 |
| 20 | 1263795 |
| 21 | 1787960 |
| 22 | 2508952 |
| 23 | 3493970 |
| 24 | 4831164 |
| 25 | 6635624 |
| 26 | 9056943 |
| 27 | 12288744 |
| 28 | 16580631 |
| 29 | 22253151 |
| 30 | 29716459 |
[1,23,85,231,535,1124,2198,4072,7228,12392,20632, 33506,53252,83048,127359,192401,286751,422151, 614552,885480,1263795,1787960,2508952,3493970, 4831164,6635624,9056943,12288744,16580631, 22253151,29716459] |