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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 7 |
| 6 | 26 |
| 7 | 33 |
| 8 | 158 |
| 9 | 191 |
| 10 | 1113 |
| 11 | 1304 |
| 12 | 8937 |
| 13 | 10241 |
| 14 | 80624 |
| 15 | 90865 |
| 16 | 807544 |
| 17 | 898409 |
| 18 | 8893225 |
| 19 | 9791634 |
| 20 | 106809565 |
| 21 | 116601199 |
| 22 | 1389422754 |
| 23 | 1506023953 |
| 24 | 19461710190 |
| 25 | 20967734143 |
| 26 | 292042254049 |
| 27 | 313009988192 |
| 28 | 4674182088737 |
[0,1,1,2,5,7,26,33,158,191,1113,1304,8937,10241, 80624,90865,807544,898409,8893225,9791634, 106809565,116601199,1389422754,1506023953, 19461710190,20967734143,292042254049,313009988192, 4674182088737] |