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| n | a(n) |
|---|---|
| 1 | 85663 |
| 2 | 176266 |
| 3 | 327147 |
| 4 | 949158 |
| 5 | 1744459 |
| 6 | 4292539 |
| 7 | 8304638 |
| 8 | 18590483 |
| 9 | 37412196 |
| 10 | 79632497 |
| 11 | 161715507 |
| 12 | 333968028 |
| 13 | 674473122 |
| 14 | 1366396447 |
| 15 | 2737489031 |
| 16 | 5482593881 |
| 17 | 10922295848 |
| 18 | 21751547857 |
| 19 | 43229912120 |
| 20 | 85944892631 |
| 21 | 170816625840 |
[85663,176266,327147,949158,1744459,4292539, 8304638,18590483,37412196,79632497,161715507, 333968028,674473122,1366396447,2737489031, 5482593881,10922295848,21751547857,43229912120, 85944892631,170816625840] |