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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 8 |
| 3 | 21 |
| 4 | 46 |
| 5 | 87 |
| 6 | 148 |
| 7 | 233 |
| 8 | 346 |
| 9 | 491 |
| 10 | 672 |
| 11 | 893 |
| 12 | 1158 |
| 13 | 1471 |
| 14 | 1836 |
| 15 | 2257 |
| 16 | 2738 |
| 17 | 3283 |
| 18 | 3896 |
| 19 | 4581 |
| 20 | 5342 |
| 21 | 6183 |
| 22 | 7108 |
| 23 | 8121 |
| 24 | 9226 |
| 25 | 10427 |
| 26 | 11728 |
| 27 | 13133 |
| 28 | 14646 |
| 29 | 16271 |
| 30 | 18012 |
| 31 | 19873 |
| 32 | 21858 |
| 33 | 23971 |
| 34 | 26216 |
| 35 | 28597 |
| 36 | 31118 |
| 37 | 33783 |
| 38 | 36596 |
| 39 | 39561 |
| 40 | 42682 |
| 41 | 45963 |
[1,3,8,21,46,87,148,233,346,491,672,893,1158,1471, 1836,2257,2738,3283,3896,4581,5342,6183,7108,8121, 9226,10427,11728,13133,14646,16271,18012,19873, 21858,23971,26216,28597,31118,33783,36596,39561, 42682,45963] |