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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 4 |
| 3 | 6 |
| 4 | 34 |
| 5 | 4 |
| 6 | 18 |
| 7 | 4 |
| 8 | 10 |
| 9 | 34 |
| 10 | 60 |
| 11 | 208 |
| 12 | 442 |
| 13 | 976 |
| 14 | 1548 |
| 15 | 1918 |
| 16 | 1726 |
| 17 | 3828 |
| 18 | 210 |
| 19 | 17940 |
| 20 | 34254 |
| 21 | 1852 |
| 22 | 19986 |
| 23 | 7728 |
| 24 | 22186 |
| 25 | 9966 |
[4,4,6,34,4,18,4,10,34,60,208,442,976,1548,1918, 1726,3828,210,17940,34254,1852,19986,7728,22186, 9966] |