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