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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 11 |
| 3 | 39 |
| 4 | 123 |
| 5 | 365 |
| 6 | 1109 |
| 7 | 3393 |
| 8 | 10489 |
| 9 | 32668 |
| 10 | 102229 |
| 11 | 320988 |
| 12 | 1010194 |
| 13 | 3184136 |
| 14 | 10046919 |
| 15 | 31723590 |
| 16 | 100216743 |
| 17 | 316694003 |
| 18 | 1001003330 |
| 19 | 3164437423 |
| 20 | 10004650116 |
| 21 | 31632790242 |
| 22 | 100021566155 |
| 23 | 316274216760 |
| 24 | 1000100055682 |
| 25 | 3162493192563 |
| 26 | 10000464300849 |
| 27 | 31623776828239 |
| 28 | 100002154796112 |
[3,11,39,123,365,1109,3393,10489,32668,102229, 320988,1010194,3184136,10046919,31723590, 100216743,316694003,1001003330,3164437423, 10004650116,31632790242,100021566155,316274216760, 1000100055682,3162493192563,10000464300849, 31623776828239,100002154796112] |