The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 1 |
| 7 | 1 |
| 8 | 3 |
| 9 | 1 |
| 10 | 2 |
| 11 | 4 |
| 12 | 1 |
| 13 | 1 |
| 14 | 3 |
| 15 | 6 |
| 16 | 1 |
| 17 | 2 |
| 18 | 4 |
| 19 | 8 |
| 20 | 1 |
| 21 | 1 |
| 22 | 3 |
| 23 | 6 |
| 24 | 11 |
| 25 | 1 |
| 26 | 2 |
| 27 | 4 |
| 28 | 8 |
| 29 | 15 |
| 30 | 1 |
| 31 | 1 |
| 32 | 3 |
| 33 | 6 |
| 34 | 11 |
| 35 | 20 |
| 36 | 1 |
| 37 | 2 |
| 38 | 4 |
| 39 | 8 |
| 40 | 15 |
| 41 | 26 |
| 42 | 1 |
| 43 | 1 |
| 44 | 3 |
| 45 | 6 |
| 46 | 11 |
| 47 | 20 |
| 48 | 35 |
| 49 | 1 |
| 50 | 2 |
| 51 | 4 |
| 52 | 8 |
| 53 | 15 |
| 54 | 26 |
| 55 | 45 |
| 56 | 1 |
| 57 | 1 |
| 58 | 3 |
| 59 | 6 |
| 60 | 11 |
| 61 | 20 |
| 62 | 35 |
| 63 | 58 |
| 64 | 1 |
| 65 | 2 |
| 66 | 4 |
| 67 | 8 |
| 68 | 15 |
| 69 | 26 |
| 70 | 45 |
| 71 | 75 |
| 72 | 1 |
| 73 | 1 |
| 74 | 3 |
| 75 | 6 |
| 76 | 11 |
| 77 | 20 |
| 78 | 35 |
| 79 | 58 |
| 80 | 96 |
| 81 | 1 |
| 82 | 2 |
| 83 | 4 |
| 84 | 8 |
| 85 | 15 |
| 86 | 26 |
| 87 | 45 |
| 88 | 75 |
| 89 | 121 |
[1,1,1,1,1,2,1,1,3,1,2,4,1,1,3,6,1,2,4,8,1,1,3,6, 11,1,2,4,8,15,1,1,3,6,11,20,1,2,4,8,15,26,1,1,3,6, 11,20,35,1,2,4,8,15,26,45,1,1,3,6,11,20,35,58,1,2, 4,8,15,26,45,75,1,1,3,6,11,20,35,58,96,1,2,4,8,15, 26,45,75,121] |