| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 6 |
| 5 | 6 |
| 6 | 8 |
| 7 | 10 |
| 8 | 8 |
| 9 | 10 |
| 10 | 12 |
| 11 | 10 |
| 12 | 14 |
| 13 | 10 |
| 14 | 14 |
| 15 | 16 |
| 16 | 14 |
| 17 | 18 |
| 18 | 12 |
| 19 | 14 |
| 20 | 16 |
| 21 | 18 |
| 22 | 20 |
| 23 | 14 |
| 24 | 22 |
| 25 | 14 |
| 26 | 16 |
| 27 | 18 |
| 28 | 20 |
| 29 | 22 |
| 30 | 24 |
| 31 | 18 |
| 32 | 22 |
| 33 | 16 |
| 34 | 26 |
| 35 | 22 |
| 36 | 26 |
| 37 | 18 |
| 38 | 28 |
| 39 | 22 |
| 40 | 26 |
[1,1,4,6,6,8,10,8,10,12,10,14,10,14,16,14,18,12, 14,16,18,20,14,22,14,16,18,20,22,24,18,22,16,26, 22,26,18,28,22,26] |