The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 4 |
| 7 | 3 |
| 8 | 3 |
| 9 | 3 |
| 10 | 3 |
| 11 | 6 |
| 12 | 4 |
| 13 | 5 |
| 14 | 5 |
| 15 | 5 |
| 16 | 9 |
| 17 | 6 |
| 18 | 7 |
| 19 | 7 |
| 20 | 7 |
| 21 | 12 |
| 22 | 8 |
| 23 | 9 |
| 24 | 9 |
| 25 | 9 |
| 26 | 14 |
| 27 | 9 |
| 28 | 11 |
| 29 | 10 |
| 30 | 10 |
| 31 | 17 |
| 32 | 11 |
| 33 | 13 |
| 34 | 12 |
| 35 | 13 |
| 36 | 19 |
| 37 | 12 |
| 38 | 15 |
| 39 | 14 |
| 40 | 14 |
| 41 | 22 |
| 42 | 14 |
| 43 | 17 |
| 44 | 16 |
| 45 | 16 |
| 46 | 25 |
| 47 | 16 |
| 48 | 19 |
| 49 | 18 |
| 50 | 18 |
| 51 | 27 |
| 52 | 17 |
| 53 | 21 |
| 54 | 19 |
| 55 | 20 |
| 56 | 30 |
| 57 | 19 |
| 58 | 23 |
| 59 | 21 |
| 60 | 22 |
| 61 | 33 |
| 62 | 21 |
| 63 | 25 |
| 64 | 23 |
| 65 | 24 |
| 66 | 35 |
| 67 | 22 |
| 68 | 27 |
| 69 | 25 |
| 70 | 26 |
| 71 | 38 |
| 72 | 24 |
| 73 | 29 |
| 74 | 27 |
| 75 | 28 |
| 76 | 40 |
| 77 | 25 |
| 78 | 31 |
| 79 | 28 |
| 80 | 29 |
[1,1,1,1,1,4,3,3,3,3,6,4,5,5,5,9,6,7,7,7,12,8,9,9, 9,14,9,11,10,10,17,11,13,12,13,19,12,15,14,14,22, 14,17,16,16,25,16,19,18,18,27,17,21,19,20,30,19, 23,21,22,33,21,25,23,24,35,22,27,25,26,38,24,29, 27,28,40,25,31,28,29] |