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| n | a(n) |
|---|---|
| 1 | 156 |
| 2 | 1436 |
| 3 | 12714 |
| 4 | 103106 |
| 5 | 807253 |
| 6 | 5988660 |
| 7 | 43018570 |
| 8 | 298869279 |
| 9 | 2027295942 |
| 10 | 13463590124 |
| 11 | 87975867196 |
| 12 | 567211697987 |
| 13 | 3618996194685 |
| 14 | 22898470921003 |
| 15 | 143947968870035 |
| 16 | 900332163552591 |
| 17 | 5609247838962276 |
| 18 | 34842167045880902 |
[156,1436,12714,103106,807253,5988660,43018570, 298869279,2027295942,13463590124,87975867196, 567211697987,3618996194685,22898470921003, 143947968870035,900332163552591,5609247838962276, 34842167045880902] |