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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 5 |
| 4 | 15 |
| 5 | 42 |
| 6 | 44 |
| 7 | 47 |
| 8 | 121 |
| 9 | 336 |
| 10 | 340 |
| 11 | 347 |
| 12 | 930 |
| 13 | 2548 |
| 14 | 6937 |
| 15 | 6947 |
| 16 | 51322 |
| 17 | 379097 |
| 18 | 379131 |
| 19 | 379133 |
| 20 | 2801205 |
| 21 | 20698345 |
| 22 | 56264090 |
| 23 | 56264197 |
| 24 | 152941920 |
| 25 | 152942012 |
| 26 | 8350344420 |
| 27 | 61701166395 |
| 28 | 455913379395 |
| 29 | 455913379831 |
| 30 | 1239301050694 |
| 31 | 3368769533660 |
| 32 | 3368769533812 |
[1,4,5,15,42,44,47,121,336,340,347,930,2548,6937, 6947,51322,379097,379131,379133,2801205,20698345, 56264090,56264197,152941920,152942012,8350344420, 61701166395,455913379395,455913379831, 1239301050694,3368769533660,3368769533812] |