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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 1 |
| 6 | 2 |
| 7 | 4 |
| 8 | 5 |
| 9 | 6 |
| 10 | 14 |
| 11 | 17 |
| 12 | 20 |
| 13 | 48 |
| 14 | 57 |
| 15 | 68 |
| 16 | 162 |
| 17 | 193 |
| 18 | 230 |
| 19 | 548 |
| 20 | 653 |
| 21 | 778 |
| 22 | 1854 |
| 23 | 2209 |
| 24 | 2632 |
| 25 | 6272 |
| 26 | 7473 |
| 27 | 8904 |
| 28 | 21218 |
| 29 | 25281 |
| 30 | 30122 |
| 31 | 71780 |
| 32 | 85525 |
| 33 | 101902 |
| 34 | 242830 |
| 35 | 289329 |
| 36 | 344732 |
| 37 | 821488 |
| 38 | 978793 |
| 39 | 1166220 |
| 40 | 2779074 |
| 41 | 3311233 |
| 42 | 3945294 |
| 43 | 9401540 |
[0,1,0,2,1,2,4,5,6,14,17,20,48,57,68,162,193,230, 548,653,778,1854,2209,2632,6272,7473,8904,21218, 25281,30122,71780,85525,101902,242830,289329, 344732,821488,978793,1166220,2779074,3311233, 3945294,9401540] |