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| n | a(n) |
|---|---|
| 1 | 75 |
| 2 | 131 |
| 3 | 310 |
| 4 | 566 |
| 5 | 976 |
| 6 | 2229 |
| 7 | 4296 |
| 8 | 7576 |
| 9 | 16060 |
| 10 | 32285 |
| 11 | 58636 |
| 12 | 118158 |
| 13 | 240124 |
| 14 | 449449 |
| 15 | 881000 |
| 16 | 1782816 |
| 17 | 3414548 |
| 18 | 6616199 |
| 19 | 13258972 |
| 20 | 25773006 |
| 21 | 49827510 |
| 22 | 98896019 |
| 23 | 193756928 |
| 24 | 375388238 |
| 25 | 739657558 |
| 26 | 1453670523 |
| 27 | 2825958650 |
| 28 | 5543030018 |
[75,131,310,566,976,2229,4296,7576,16060,32285, 58636,118158,240124,449449,881000,1782816,3414548, 6616199,13258972,25773006,49827510,98896019, 193756928,375388238,739657558,1453670523, 2825958650,5543030018] |