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| n | a(n) |
|---|---|
| 1 | 512 |
| 2 | 3036 |
| 3 | 16240 |
| 4 | 76832 |
| 5 | 348032 |
| 6 | 1511152 |
| 7 | 6440848 |
| 8 | 27128324 |
| 9 | 113712184 |
| 10 | 475820928 |
| 11 | 1990141264 |
| 12 | 8325715216 |
| 13 | 34837433912 |
| 14 | 145798977252 |
| 15 | 610246788472 |
| 16 | 2554332033248 |
| 17 | 10691962218368 |
| 18 | 44754714079088 |
| 19 | 187335498849168 |
[512,3036,16240,76832,348032,1511152,6440848, 27128324,113712184,475820928,1990141264, 8325715216,34837433912,145798977252,610246788472, 2554332033248,10691962218368,44754714079088, 187335498849168] |