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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 7 |
| 6 | 16 |
| 7 | 29 |
| 8 | 47 |
| 9 | 82 |
| 10 | 162 |
| 11 | 331 |
| 12 | 650 |
| 13 | 1220 |
| 14 | 2262 |
| 15 | 4261 |
| 16 | 8175 |
| 17 | 15747 |
| 18 | 30121 |
| 19 | 57210 |
| 20 | 108521 |
| 21 | 206456 |
| 22 | 393865 |
| 23 | 751675 |
| 24 | 1432772 |
| 25 | 2728076 |
| 26 | 5193901 |
| 27 | 9893596 |
| 28 | 18853664 |
| 29 | 35928972 |
| 30 | 68454369 |
| 31 | 130403085 |
| 32 | 248413549 |
| 33 | 473261209 |
| 34 | 901681650 |
| 35 | 1717923403 |
| 36 | 3272944760 |
[1,1,1,1,2,7,16,29,47,82,162,331,650,1220,2262, 4261,8175,15747,30121,57210,108521,206456,393865, 751675,1432772,2728076,5193901,9893596,18853664, 35928972,68454369,130403085,248413549,473261209, 901681650,1717923403,3272944760] |