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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 10 |
| 8 | 20 |
| 9 | 36 |
| 10 | 72 |
| 11 | 137 |
| 12 | 275 |
| 13 | 541 |
| 14 | 1098 |
| 15 | 2208 |
| 16 | 4521 |
| 17 | 9240 |
| 18 | 19084 |
| 19 | 39451 |
| 20 | 82113 |
| 21 | 171240 |
| 22 | 358794 |
| 23 | 753460 |
| 24 | 1587740 |
| 25 | 3353192 |
| 26 | 7100909 |
| 27 | 15067924 |
| 28 | 32044456 |
| 29 | 68272854 |
| 30 | 145730675 |
| 31 | 311575140 |
| 32 | 667221030 |
| 33 | 1430892924 |
| 34 | 3072925944 |
| 35 | 6607832422 |
| 36 | 14226665499 |
[1,1,1,2,3,6,10,20,36,72,137,275,541,1098,2208, 4521,9240,19084,39451,82113,171240,358794,753460, 1587740,3353192,7100909,15067924,32044456, 68272854,145730675,311575140,667221030,1430892924, 3072925944,6607832422,14226665499] |