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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 11 |
| 4 | 38 |
| 5 | 316 |
| 6 | 3183 |
| 7 | 11265 |
| 8 | 14759 |
| 9 | 17862 |
| 10 | 22567 |
| 11 | 107889 |
| 12 | 136101 |
| 13 | 8146735 |
| 14 | 180468251 |
| 15 | 431027647 |
| 16 | 523109219 |
| 17 | 309378032 |
| 18 | 747071157 |
| 19 | 6153823083 |
| 20 | 139774726451 |
| 21 | 164308335281 |
| 22 | 32500833537583 |
| 23 | 4771179318480649 |
| 24 | 1340785041542709 |
| 25 | 2918458761810452241 |
[1,3,11,38,316,3183,11265,14759,17862,22567, 107889,136101,8146735,180468251,431027647, 523109219,309378032,747071157,6153823083, 139774726451,164308335281,32500833537583, 4771179318480649,1340785041542709, 2918458761810452241] |