| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 4 |
| 7 | 13 |
| 8 | 31 |
| 9 | 61 |
| 10 | 106 |
| 11 | 169 |
| 12 | 262 |
| 13 | 424 |
| 14 | 748 |
| 15 | 1417 |
| 16 | 2749 |
| 17 | 5251 |
| 18 | 9709 |
| 19 | 17395 |
| 20 | 30553 |
| 21 | 53434 |
| 22 | 94285 |
| 23 | 168859 |
| 24 | 306283 |
| 25 | 558742 |
| 26 | 1017895 |
| 27 | 1844044 |
| 28 | 3320044 |
| 29 | 5952472 |
| 30 | 10660177 |
| 31 | 19119385 |
| 32 | 34383781 |
| 33 | 61985497 |
| 34 | 111884665 |
| 35 | 201938701 |
| 36 | 364128136 |
[1,1,1,1,1,1,4,13,31,61,106,169,262,424,748,1417, 2749,5251,9709,17395,30553,53434,94285,168859, 306283,558742,1017895,1844044,3320044,5952472, 10660177,19119385,34383781,61985497,111884665, 201938701,364128136] |