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| n | a(n) |
|---|---|
| 1 | 304 |
| 2 | 704 |
| 3 | 7616 |
| 4 | 50802 |
| 5 | 435194 |
| 6 | 3394156 |
| 7 | 27734942 |
| 8 | 222519352 |
| 9 | 1806824700 |
| 10 | 14613188788 |
| 11 | 118539179458 |
| 12 | 960617285450 |
| 13 | 7792028797892 |
| 14 | 63191254464846 |
| 15 | 512612165552564 |
| 16 | 4158105409259042 |
| 17 | 33732198233141518 |
| 18 | 273646099830762238 |
[304,704,7616,50802,435194,3394156,27734942, 222519352,1806824700,14613188788,118539179458, 960617285450,7792028797892,63191254464846, 512612165552564,4158105409259042, 33732198233141518,273646099830762238] |