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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 2 |
| 8 | 5 |
| 9 | 10 |
| 10 | 5 |
| 11 | 14 |
| 12 | 28 |
| 13 | 14 |
| 14 | 42 |
| 15 | 84 |
| 16 | 42 |
| 17 | 132 |
| 18 | 264 |
| 19 | 132 |
| 20 | 429 |
| 21 | 858 |
| 22 | 429 |
| 23 | 1430 |
| 24 | 2860 |
| 25 | 1430 |
| 26 | 4862 |
| 27 | 9724 |
| 28 | 4862 |
| 29 | 16796 |
| 30 | 33592 |
| 31 | 16796 |
| 32 | 58786 |
| 33 | 117572 |
| 34 | 58786 |
| 35 | 208012 |
| 36 | 416024 |
| 37 | 208012 |
| 38 | 742900 |
| 39 | 1485800 |
| 40 | 742900 |
| 41 | 2674440 |
| 42 | 5348880 |
| 43 | 2674440 |
| 44 | 9694845 |
| 45 | 19389690 |
| 46 | 9694845 |
| 47 | 35357670 |
[1,1,1,2,1,2,4,2,5,10,5,14,28,14,42,84,42,132,264, 132,429,858,429,1430,2860,1430,4862,9724,4862, 16796,33592,16796,58786,117572,58786,208012, 416024,208012,742900,1485800,742900,2674440, 5348880,2674440,9694845,19389690,9694845,35357670] |