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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 426 |
| 3 | 426 |
| 4 | 2269 |
| 5 | 3056 |
| 6 | 2269 |
| 7 | 12004 |
| 8 | 21814 |
| 9 | 21814 |
| 10 | 12004 |
| 11 | 63945 |
| 12 | 157852 |
| 13 | 216432 |
| 14 | 157852 |
| 15 | 63945 |
| 16 | 339684 |
| 17 | 1148940 |
| 18 | 2192662 |
| 19 | 2192662 |
| 20 | 1148940 |
| 21 | 339684 |
| 22 | 1806104 |
| 23 | 8334390 |
| 24 | 22613889 |
| 25 | 32232284 |
| 26 | 22613889 |
| 27 | 8334390 |
| 28 | 1806104 |
| 29 | 9590924 |
| 30 | 60321850 |
[81,426,426,2269,3056,2269,12004,21814,21814, 12004,63945,157852,216432,157852,63945,339684, 1148940,2192662,2192662,1148940,339684,1806104, 8334390,22613889,32232284,22613889,8334390, 1806104,9590924,60321850] |