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| n | a(n) |
|---|---|
| 1 | 29759 |
| 2 | 118925 |
| 3 | 237143 |
| 4 | 533327 |
| 5 | 1045337 |
| 6 | 2129846 |
| 7 | 4118693 |
| 8 | 8207451 |
| 9 | 16293926 |
| 10 | 33460774 |
| 11 | 69949629 |
| 12 | 150556699 |
| 13 | 329921966 |
| 14 | 735973997 |
| 15 | 1659208781 |
| 16 | 3772267028 |
| 17 | 8617309611 |
| 18 | 19752084140 |
| 19 | 45358074700 |
| 20 | 104286805752 |
| 21 | 239930547292 |
[29759,118925,237143,533327,1045337,2129846, 4118693,8207451,16293926,33460774,69949629, 150556699,329921966,735973997,1659208781, 3772267028,8617309611,19752084140,45358074700, 104286805752,239930547292] |