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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 6 |
| 6 | 14 |
| 7 | 18 |
| 8 | 42 |
| 9 | 90 |
| 10 | 186 |
| 11 | 198 |
| 12 | 210 |
| 13 | 450 |
| 14 | 462 |
| 15 | 930 |
| 16 | 990 |
| 17 | 1050 |
| 18 | 2310 |
| 19 | 7350 |
| 20 | 14910 |
| 21 | 16170 |
| 22 | 66990 |
| 23 | 169050 |
| 24 | 177870 |
| 25 | 371910 |
| 26 | 1540770 |
| 27 | 2312310 |
| 28 | 4626930 |
| 29 | 4834830 |
| 30 | 19711230 |
| 31 | 20030010 |
| 32 | 30060030 |
| 33 | 60150090 |
| 34 | 62852790 |
| 35 | 256245990 |
| 36 | 260390130 |
| 37 | 1061590530 |
| 38 | 1068497430 |
[1,2,3,4,6,14,18,42,90,186,198,210,450,462,930, 990,1050,2310,7350,14910,16170,66990,169050, 177870,371910,1540770,2312310,4626930,4834830, 19711230,20030010,30060030,60150090,62852790, 256245990,260390130,1061590530,1068497430] |