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| n | a(n) |
|---|---|
| 1 | 209 |
| 2 | 637 |
| 3 | 2005 |
| 4 | 6365 |
| 5 | 19957 |
| 6 | 62393 |
| 7 | 195261 |
| 8 | 612041 |
| 9 | 1918365 |
| 10 | 6011045 |
| 11 | 18832757 |
| 12 | 59007013 |
| 13 | 184888993 |
| 14 | 579320337 |
| 15 | 1815187133 |
| 16 | 5687517861 |
| 17 | 17820706801 |
| 18 | 55837720705 |
| 19 | 174956625753 |
| 20 | 548192325273 |
| 21 | 1717653145453 |
| 22 | 5381929652993 |
[209,637,2005,6365,19957,62393,195261,612041, 1918365,6011045,18832757,59007013,184888993, 579320337,1815187133,5687517861,17820706801, 55837720705,174956625753,548192325273, 1717653145453,5381929652993] |