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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 2 |
| 6 | 3 |
| 7 | 4 |
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| 11 | 5 |
| 12 | 5 |
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| 14 | 6 |
| 15 | 7 |
| 16 | 7 |
| 17 | 7 |
| 18 | 7 |
| 19 | 8 |
| 20 | 8 |
| 21 | 8 |
| 22 | 8 |
| 23 | 9 |
| 24 | 9 |
| 25 | 9 |
| 26 | 9 |
| 27 | 10 |
| 28 | 10 |
| 29 | 10 |
| 30 | 11 |
| 31 | 12 |
| 32 | 12 |
| 33 | 12 |
| 34 | 12 |
| 35 | 13 |
| 36 | 13 |
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| 39 | 14 |
| 40 | 14 |
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| 70 | 22 |
| 71 | 23 |
| 72 | 23 |
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| 74 | 23 |
| 75 | 23 |
| 76 | 24 |
| 77 | 24 |
| 78 | 24 |
| 79 | 25 |
[0,1,1,2,2,2,3,4,4,4,4,5,5,5,6,7,7,7,7,8,8,8,8,9, 9,9,9,10,10,10,11,12,12,12,12,13,13,13,13,14,14, 14,14,14,15,15,15,16,16,16,16,17,17,17,17,18,18, 18,18,19,19,19,20,21,21,21,21,22,22,22,22,23,23, 23,23,23,24,24,24,25] |