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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 20 |
| 5 | 23 |
| 6 | 43 |
| 7 | 66 |
| 8 | 3343 |
| 9 | 3409 |
| 10 | 6752 |
| 11 | 10161 |
| 12 | 67718 |
| 13 | 77879 |
| 14 | 145597 |
| 15 | 223476 |
| 16 | 11319397 |
| 17 | 11542873 |
| 18 | 22862270 |
| 19 | 34405143 |
| 20 | 229293128 |
| 21 | 263698271 |
| 22 | 492991399 |
| 23 | 756689670 |
| 24 | 38327474899 |
| 25 | 39084164569 |
| 26 | 77411639468 |
| 27 | 116495804037 |
| 28 | 776386463690 |
| 29 | 892882267727 |
[1,1,2,3,20,23,43,66,3343,3409,6752,10161,67718, 77879,145597,223476,11319397,11542873,22862270, 34405143,229293128,263698271,492991399,756689670, 38327474899,39084164569,77411639468,116495804037, 776386463690,892882267727] |