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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 5 |
| 4 | 6 |
| 5 | 1 |
| 6 | 14 |
| 7 | 28 |
| 8 | 12 |
| 9 | 1 |
| 10 | 42 |
| 11 | 120 |
| 12 | 90 |
| 13 | 20 |
| 14 | 1 |
| 15 | 132 |
| 16 | 495 |
| 17 | 550 |
| 18 | 220 |
| 19 | 30 |
| 20 | 1 |
| 21 | 429 |
| 22 | 2002 |
| 23 | 3003 |
| 24 | 1820 |
| 25 | 455 |
| 26 | 42 |
| 27 | 1 |
| 28 | 1430 |
| 29 | 8008 |
| 30 | 15288 |
| 31 | 12740 |
| 32 | 4900 |
| 33 | 840 |
| 34 | 56 |
| 35 | 1 |
| 36 | 4862 |
| 37 | 31824 |
| 38 | 74256 |
| 39 | 79968 |
| 40 | 42840 |
| 41 | 11424 |
| 42 | 1428 |
| 43 | 72 |
| 44 | 1 |
| 45 | 16796 |
| 46 | 125970 |
| 47 | 348840 |
| 48 | 465120 |
| 49 | 325584 |
[1,2,1,5,6,1,14,28,12,1,42,120,90,20,1,132,495, 550,220,30,1,429,2002,3003,1820,455,42,1,1430, 8008,15288,12740,4900,840,56,1,4862,31824,74256, 79968,42840,11424,1428,72,1,16796,125970,348840, 465120,325584] |