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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 7 |
| 5 | 15 |
| 6 | 21 |
| 7 | 30 |
| 8 | 39 |
| 9 | 51 |
| 10 | 120 |
| 11 | 204 |
| 12 | 480 |
| 13 | 816 |
| 14 | 849 |
| 15 | 2041 |
| 16 | 2185 |
| 17 | 4785 |
| 18 | 19140 |
| 19 | 21505 |
| 20 | 43065 |
| 21 | 44080 |
| 22 | 49504 |
| 23 | 59185 |
| 24 | 172260 |
| 25 | 176320 |
| 26 | 178465 |
| 27 | 236740 |
| 28 | 387585 |
| 29 | 443521 |
| 30 | 552601 |
| 31 | 1774084 |
| 32 | 2210404 |
| 33 | 2310385 |
| 34 | 3991689 |
| 35 | 4973409 |
| 36 | 5371081 |
| 37 | 7096336 |
[2,3,6,7,15,21,30,39,51,120,204,480,816,849,2041, 2185,4785,19140,21505,43065,44080,49504,59185, 172260,176320,178465,236740,387585,443521,552601, 1774084,2210404,2310385,3991689,4973409,5371081, 7096336] |