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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 3 |
| 3 | 2 |
| 4 | 6 |
| 5 | 6 |
| 6 | 14 |
| 7 | 18 |
| 8 | 36 |
| 9 | 58 |
| 10 | 108 |
| 11 | 186 |
| 12 | 352 |
| 13 | 630 |
| 14 | 1182 |
| 15 | 2190 |
| 16 | 4116 |
| 17 | 7710 |
| 18 | 14602 |
| 19 | 27594 |
| 20 | 52488 |
| 21 | 99878 |
| 22 | 190746 |
| 23 | 364722 |
| 24 | 699252 |
| 25 | 1342182 |
| 26 | 2581428 |
| 27 | 4971066 |
| 28 | 9587580 |
| 29 | 18512790 |
| 30 | 35792568 |
| 31 | 69273666 |
| 32 | 134219796 |
| 33 | 260301174 |
| 34 | 505294128 |
| 35 | 981706830 |
[3,3,2,6,6,14,18,36,58,108,186,352,630,1182,2190, 4116,7710,14602,27594,52488,99878,190746,364722, 699252,1342182,2581428,4971066,9587580,18512790, 35792568,69273666,134219796,260301174,505294128, 981706830] |