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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 12 |
| 4 | 20 |
| 5 | 55 |
| 6 | 42 |
| 7 | 56 |
| 8 | 72 |
| 9 | 144 |
| 10 | 110 |
| 11 | 253 |
| 12 | 156 |
| 13 | 351 |
| 14 | 336 |
| 15 | 240 |
| 16 | 272 |
| 17 | 1751 |
| 18 | 342 |
| 19 | 3420 |
| 20 | 500 |
| 21 | 672 |
| 22 | 506 |
| 23 | 1081 |
| 24 | 600 |
| 25 | 2525 |
| 26 | 702 |
| 27 | 1512 |
| 28 | 812 |
| 29 | 1711 |
| 30 | 930 |
| 31 | 992 |
| 32 | 1440 |
[1,6,12,20,55,42,56,72,144,110,253,156,351,336, 240,272,1751,342,3420,500,672,506,1081,600,2525, 702,1512,812,1711,930,992,1440] |