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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 10 |
| 5 | 33 |
| 6 | 196 |
| 7 | 1153 |
| 8 | 9226 |
| 9 | 82947 |
| 10 | 829474 |
| 11 | 8294401 |
| 12 | 99533004 |
| 13 | 1194393601 |
| 14 | 16721511554 |
| 15 | 250822656035 |
| 16 | 4013162505226 |
| 17 | 64210599936001 |
| 18 | 1155790798931140 |
| 19 | 20804234379264001 |
| 20 | 416084687586109482 |
| 21 | 8737778439290881155 |
| 22 | 192231125664407654402 |
| 23 | 4229084764616785920001 |
[1,2,3,10,33,196,1153,9226,82947,829474,8294401, 99533004,1194393601,16721511554,250822656035, 4013162505226,64210599936001,1155790798931140, 20804234379264001,416084687586109482, 8737778439290881155,192231125664407654402, 4229084764616785920001] |