The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 3 |
| 8 | 6 |
| 9 | 4 |
| 10 | 7 |
| 11 | 5 |
| 12 | 9 |
| 13 | 8 |
| 14 | 7 |
| 15 | 6 |
| 16 | 7 |
| 17 | 15 |
| 18 | 12 |
| 19 | 14 |
| 20 | 6 |
| 21 | 12 |
| 22 | 11 |
| 23 | 21 |
| 24 | 20 |
| 25 | 21 |
| 26 | 12 |
| 27 | 12 |
| 28 | 8 |
| 29 | 15 |
| 30 | 33 |
| 31 | 28 |
| 32 | 35 |
| 33 | 18 |
| 34 | 24 |
| 35 | 8 |
| 36 | 15 |
| 37 | 22 |
| 38 | 45 |
| 39 | 44 |
| 40 | 49 |
| 41 | 30 |
| 42 | 36 |
| 43 | 16 |
| 44 | 15 |
| 45 | 13 |
| 46 | 30 |
| 47 | 66 |
| 48 | 60 |
| 49 | 77 |
| 50 | 42 |
| 51 | 60 |
| 52 | 24 |
| 53 | 30 |
| 54 | 13 |
| 55 | 18 |
| 56 | 42 |
| 57 | 90 |
| 58 | 88 |
| 59 | 105 |
| 60 | 66 |
| 61 | 84 |
| 62 | 40 |
| 63 | 45 |
| 64 | 26 |
| 65 | 18 |
| 66 | 12 |
| 67 | 56 |
| 68 | 126 |
| 69 | 120 |
| 70 | 154 |
| 71 | 90 |
| 72 | 132 |
| 73 | 56 |
| 74 | 75 |
| 75 | 39 |
| 76 | 36 |
| 77 | 12 |
| 78 | 28 |
[1,1,3,2,3,4,3,6,4,7,5,9,8,7,6,7,15,12,14,6,12,11, 21,20,21,12,12,8,15,33,28,35,18,24,8,15,22,45,44, 49,30,36,16,15,13,30,66,60,77,42,60,24,30,13,18, 42,90,88,105,66,84,40,45,26,18,12,56,126,120,154, 90,132,56,75,39,36,12,28] |