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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 2 |
| 5 | 2 |
| 6 | 2 |
| 7 | 2 |
| 8 | 4 |
| 9 | 4 |
| 10 | 4 |
| 11 | 4 |
| 12 | 6 |
| 13 | 6 |
| 14 | 8 |
| 15 | 8 |
| 16 | 10 |
| 17 | 10 |
| 18 | 10 |
| 19 | 10 |
| 20 | 12 |
| 21 | 12 |
| 22 | 12 |
| 23 | 12 |
| 24 | 14 |
| 25 | 14 |
| 26 | 14 |
| 27 | 14 |
| 28 | 16 |
| 29 | 16 |
| 30 | 18 |
| 31 | 18 |
| 32 | 20 |
| 33 | 20 |
| 34 | 20 |
| 35 | 20 |
| 36 | 22 |
| 37 | 22 |
| 38 | 22 |
| 39 | 22 |
| 40 | 24 |
| 41 | 24 |
| 42 | 24 |
| 43 | 24 |
| 44 | 26 |
| 45 | 26 |
| 46 | 28 |
| 47 | 28 |
| 48 | 30 |
| 49 | 30 |
| 50 | 30 |
| 51 | 30 |
| 52 | 32 |
| 53 | 32 |
| 54 | 34 |
| 55 | 34 |
| 56 | 36 |
| 57 | 36 |
| 58 | 36 |
| 59 | 36 |
| 60 | 38 |
| 61 | 38 |
| 62 | 40 |
| 63 | 40 |
| 64 | 42 |
| 65 | 42 |
| 66 | 42 |
| 67 | 42 |
| 68 | 44 |
| 69 | 44 |
| 70 | 44 |
| 71 | 44 |
| 72 | 46 |
| 73 | 46 |
| 74 | 46 |
[0,0,0,2,2,2,2,4,4,4,4,6,6,8,8,10,10,10,10,12,12, 12,12,14,14,14,14,16,16,18,18,20,20,20,20,22,22, 22,22,24,24,24,24,26,26,28,28,30,30,30,30,32,32, 34,34,36,36,36,36,38,38,40,40,42,42,42,42,44,44, 44,44,46,46,46] |