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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 2 |
| 4 | 3 |
| 5 | 9 |
| 6 | 4 |
| 7 | 4 |
| 8 | 36 |
| 9 | 44 |
| 10 | 12 |
| 11 | 5 |
| 12 | 110 |
| 13 | 355 |
| 14 | 250 |
| 15 | 48 |
| 16 | 6 |
| 17 | 300 |
| 18 | 2010 |
| 19 | 3480 |
| 20 | 1644 |
| 21 | 240 |
| 22 | 7 |
| 23 | 777 |
| 24 | 9625 |
| 25 | 32235 |
| 26 | 35728 |
| 27 | 12348 |
| 28 | 1440 |
| 29 | 8 |
| 30 | 1960 |
| 31 | 42056 |
| 32 | 242200 |
| 33 | 498512 |
| 34 | 390880 |
| 35 | 104544 |
| 36 | 10080 |
| 37 | 9 |
| 38 | 4860 |
| 39 | 173754 |
| 40 | 1605744 |
| 41 | 5466321 |
| 42 | 7745220 |
| 43 | 4581036 |
| 44 | 986256 |
| 45 | 80640 |
| 46 | 10 |
| 47 | 11880 |
| 48 | 691620 |
| 49 | 9807840 |
| 50 | 51506490 |
| 51 | 117711720 |
| 52 | 123330680 |
| 53 | 57537360 |
| 54 | 10265760 |
| 55 | 725760 |
[1,2,2,3,9,4,4,36,44,12,5,110,355,250,48,6,300, 2010,3480,1644,240,7,777,9625,32235,35728,12348, 1440,8,1960,42056,242200,498512,390880,104544, 10080,9,4860,173754,1605744,5466321,7745220, 4581036,986256,80640,10,11880,691620,9807840, 51506490,117711720,123330680,57537360,10265760, 725760] |