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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 28 |
| 6 | 21 |
| 7 | 69 |
| 8 | 161 |
| 9 | 137 |
| 10 | 55 |
| 11 | 433 |
| 12 | 1078 |
| 13 | 1017 |
| 14 | 477 |
| 15 | 120 |
| 16 | 3141 |
| 17 | 8245 |
| 18 | 8437 |
| 19 | 4460 |
| 20 | 1337 |
| 21 | 231 |
| 22 | 25873 |
| 23 | 71008 |
| 24 | 77620 |
| 25 | 45058 |
| 26 | 15415 |
| 27 | 3220 |
| 28 | 406 |
| 29 | 238629 |
| 30 | 680451 |
| 31 | 786012 |
| 32 | 492264 |
| 33 | 186729 |
| 34 | 44955 |
| 35 | 6930 |
| 36 | 666 |
| 37 | 2436673 |
| 38 | 7184170 |
| 39 | 8699205 |
| 40 | 5804448 |
| 41 | 2394150 |
[1,3,6,13,28,21,69,161,137,55,433,1078,1017,477, 120,3141,8245,8437,4460,1337,231,25873,71008, 77620,45058,15415,3220,406,238629,680451,786012, 492264,186729,44955,6930,666,2436673,7184170, 8699205,5804448,2394150] |