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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 3 |
| 3 | 47 |
| 4 | 7 |
| 5 | 111 |
| 6 | 80 |
| 7 | 424 |
| 8 | 1157 |
| 9 | 2922 |
| 10 | 12816 |
| 11 | 33744 |
| 12 | 135689 |
| 13 | 427777 |
| 14 | 1511455 |
| 15 | 5237154 |
| 16 | 17740921 |
| 17 | 62498339 |
| 18 | 212645123 |
| 19 | 742064542 |
| 20 | 2553096441 |
| 21 | 8837428284 |
| 22 | 30568037684 |
| 23 | 105553660977 |
| 24 | 365371090457 |
| 25 | 1262061403870 |
| 26 | 4365797662037 |
| 27 | 15090331846613 |
[8,3,47,7,111,80,424,1157,2922,12816,33744,135689, 427777,1511455,5237154,17740921,62498339, 212645123,742064542,2553096441,8837428284, 30568037684,105553660977,365371090457, 1262061403870,4365797662037,15090331846613] |