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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 6 |
| 5 | 4 |
| 6 | 2 |
| 7 | 12 |
| 8 | 30 |
| 9 | 28 |
| 10 | 18 |
| 11 | 20 |
| 12 | 394 |
| 13 | 86 |
| 14 | 672 |
| 15 | 924 |
| 16 | 78 |
| 17 | 936 |
| 18 | 1036 |
| 19 | 170 |
| 20 | 5266 |
| 21 | 252 |
| 22 | 1272 |
| 23 | 8724 |
| 24 | 1764 |
| 25 | 1508 |
| 26 | 21288 |
| 27 | 41746 |
| 28 | 24260 |
| 29 | 21546 |
| 30 | 84042 |
| 31 | 540748 |
| 32 | 102594 |
| 33 | 398354 |
| 34 | 140482 |
| 35 | 1577952 |
| 36 | 45156 |
| 37 | 3951216 |
| 38 | 6494324 |
| 39 | 7529094 |
| 40 | 3040572 |
| 41 | 1928368 |
| 42 | 4437506 |
| 43 | 2180200 |
| 44 | 4574010 |
| 45 | 5487134 |
| 46 | 468808 |
| 47 | 14772552 |
[1,2,2,6,4,2,12,30,28,18,20,394,86,672,924,78,936, 1036,170,5266,252,1272,8724,1764,1508,21288,41746, 24260,21546,84042,540748,102594,398354,140482, 1577952,45156,3951216,6494324,7529094,3040572, 1928368,4437506,2180200,4574010,5487134,468808, 14772552] |