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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 5 |
| 6 | 14 |
| 7 | 17 |
| 8 | 70 |
| 9 | 89 |
| 10 | 326 |
| 11 | 413 |
| 12 | 1630 |
| 13 | 2089 |
| 14 | 8058 |
| 15 | 10349 |
| 16 | 40598 |
| 17 | 52385 |
| 18 | 204914 |
| 19 | 265061 |
| 20 | 1041934 |
| 21 | 1351369 |
| 22 | 5315674 |
| 23 | 6908045 |
| 24 | 27228710 |
| 25 | 35450225 |
| 26 | 139873618 |
| 27 | 182386933 |
| 28 | 720480478 |
| 29 | 940751513 |
| 30 | 3719466954 |
| 31 | 4862439261 |
| 32 | 19240428310 |
[1,1,1,4,5,14,17,70,89,326,413,1630,2089,8058, 10349,40598,52385,204914,265061,1041934,1351369, 5315674,6908045,27228710,35450225,139873618, 182386933,720480478,940751513,3719466954, 4862439261,19240428310] |