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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 7 |
| 4 | 9 |
| 5 | 25 |
| 6 | 59 |
| 7 | 84 |
| 8 | 143 |
| 9 | 227 |
| 10 | 1051 |
| 11 | 1278 |
| 12 | 2329 |
| 13 | 3607 |
| 14 | 9543 |
| 15 | 22693 |
| 16 | 32236 |
| 17 | 119401 |
| 18 | 151637 |
| 19 | 271038 |
| 20 | 16955993 |
| 21 | 17227031 |
| 22 | 34183024 |
| 23 | 119776103 |
| 24 | 153959127 |
| 25 | 427694357 |
| 26 | 1009347841 |
| 27 | 1437042198 |
| 28 | 2446390039 |
| 29 | 3883432237 |
| 30 | 17980118987 |
| 31 | 21863551224 |
[1,1,2,7,9,25,59,84,143,227,1051,1278,2329,3607, 9543,22693,32236,119401,151637,271038,16955993, 17227031,34183024,119776103,153959127,427694357, 1009347841,1437042198,2446390039,3883432237, 17980118987,21863551224] |