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| n | a(n) |
|---|---|
| 1 | 265 |
| 2 | 747 |
| 3 | 1781 |
| 4 | 4001 |
| 5 | 8773 |
| 6 | 18947 |
| 7 | 40653 |
| 8 | 87497 |
| 9 | 187925 |
| 10 | 408201 |
| 11 | 886709 |
| 12 | 1954227 |
| 13 | 4312823 |
| 14 | 9660215 |
| 15 | 21682565 |
| 16 | 49330249 |
| 17 | 112485053 |
| 18 | 259451281 |
| 19 | 599683373 |
| 20 | 1398909233 |
| 21 | 3268979199 |
| 22 | 7693687203 |
| 23 | 18131925659 |
| 24 | 42963258607 |
| 25 | 101902441855 |
[265,747,1781,4001,8773,18947,40653,87497,187925, 408201,886709,1954227,4312823,9660215,21682565, 49330249,112485053,259451281,599683373,1398909233, 3268979199,7693687203,18131925659,42963258607, 101902441855] |