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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 6 |
| 5 | 12 |
| 6 | 32 |
| 7 | 128 |
| 8 | 710 |
| 9 | 5382 |
| 10 | 52712 |
| 11 | 648392 |
| 12 | 9737334 |
| 13 | 174440042 |
| 14 | 3657500102 |
| 15 | 88362852308 |
| 16 | 2428095424620 |
| 17 | 75063692618250 |
| 18 | 2586559730396078 |
| 19 | 98552043847093520 |
| 20 | 4123221751654370052 |
| 21 | 188272405179937051082 |
| 22 | 9332039515881088707362 |
| 23 | 499720579610303128776792 |
| 24 | 28785866289100396890228042 |
[2,3,4,6,12,32,128,710,5382,52712,648392,9737334, 174440042,3657500102,88362852308,2428095424620, 75063692618250,2586559730396078,98552043847093520, 4123221751654370052,188272405179937051082, 9332039515881088707362,499720579610303128776792, 28785866289100396890228042] |