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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 166 |
| 3 | 399 |
| 4 | 1395 |
| 5 | 4444 |
| 6 | 14237 |
| 7 | 43931 |
| 8 | 134395 |
| 9 | 412427 |
| 10 | 1268252 |
| 11 | 3904488 |
| 12 | 12035011 |
| 13 | 37073205 |
| 14 | 114147345 |
| 15 | 351479919 |
| 16 | 1082415552 |
| 17 | 3333611748 |
| 18 | 10266940149 |
| 19 | 31619860897 |
| 20 | 97381441665 |
| 21 | 299912849035 |
| 22 | 923670230344 |
| 23 | 2844725104582 |
[3,166,399,1395,4444,14237,43931,134395,412427, 1268252,3904488,12035011,37073205,114147345, 351479919,1082415552,3333611748,10266940149, 31619860897,97381441665,299912849035,923670230344, 2844725104582] |