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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 14 |
| 4 | 26 |
| 5 | 36 |
| 6 | 60 |
| 7 | 150 |
| 8 | 410 |
| 9 | 484 |
| 10 | 972 |
| 11 | 1942 |
| 12 | 3694 |
| 13 | 6926 |
| 14 | 8582 |
| 15 | 11930 |
| 16 | 16076 |
| 17 | 16276 |
| 18 | 22820 |
[2,4,14,26,36,60,150,410,484,972,1942,3694,6926, 8582,11930,16076,16276,22820] |