| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 3 |
| 10 | 8 |
| 11 | 9 |
| 12 | 37 |
| 13 | 121 |
| 14 | 211 |
| 15 | 695 |
| 16 | 4889 |
| 17 | 41241 |
| 18 | 76301 |
| 19 | 853513 |
| 20 | 3882809 |
| 21 | 11957417 |
| 22 | 100146415 |
| 23 | 838216959 |
| 24 | 13379363737 |
| 25 | 411322824001 |
| 26 | 3547404378125 |
| 27 | 9069094643165 |
| 28 | 63434933542623 |
| 29 | 161784800122409 |
| 30 | 1612072001362952 |
| 31 | 2604529186263992195 |
| 32 | 28496379729272136525 |
| 33 | 646901570175200968153 |
| 34 | 1753848916484925681747 |
| 35 | 687887859687174720123201 |
| 36 | 2333546653547742584439257 |
| 37 | 56234327700401832767069245 |
| 38 | 10834138978768308207500526544 |
[1,1,1,1,1,1,1,1,3,8,9,37,121,211,695,4889,41241, 76301,853513,3882809,11957417,100146415,838216959, 13379363737,411322824001,3547404378125, 9069094643165,63434933542623,161784800122409, 1612072001362952,2604529186263992195, 28496379729272136525,646901570175200968153, 1753848916484925681747,687887859687174720123201, 2333546653547742584439257, 56234327700401832767069245, 10834138978768308207500526544] |