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 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 0 |
| 6 | 3 |
| 7 | 0 |
| 8 | 4 |
| 9 | 0 |
| 10 | 5 |
| 11 | 0 |
| 12 | 6 |
| 13 | 0 |
| 14 | 7 |
| 15 | 0 |
| 16 | 8 |
| 17 | 0 |
| 18 | 9 |
| 19 | 0 |
| 20 | 10 |
| 21 | 9 |
| 22 | 11 |
| 23 | 9 |
| 24 | 12 |
| 25 | 9 |
| 26 | 13 |
| 27 | 9 |
| 28 | 14 |
| 29 | 9 |
| 30 | 15 |
| 31 | 9 |
| 32 | 16 |
| 33 | 9 |
| 34 | 17 |
| 35 | 9 |
| 36 | 18 |
| 37 | 9 |
| 38 | 19 |
| 39 | 9 |
| 40 | 20 |
| 41 | 18 |
| 42 | 21 |
| 43 | 18 |
| 44 | 22 |
| 45 | 18 |
| 46 | 23 |
| 47 | 18 |
| 48 | 24 |
| 49 | 18 |
| 50 | 25 |
| 51 | 18 |
| 52 | 26 |
| 53 | 18 |
| 54 | 27 |
| 55 | 18 |
| 56 | 28 |
| 57 | 18 |
| 58 | 29 |
| 59 | 18 |
| 60 | 30 |
| 61 | 27 |
| 62 | 31 |
| 63 | 27 |
| 64 | 32 |
| 65 | 27 |
| 66 | 33 |
| 67 | 27 |
| 68 | 34 |
| 69 | 27 |
| 70 | 35 |
| 71 | 27 |
| 72 | 36 |
| 73 | 27 |
| 74 | 37 |
| 75 | 27 |
| 76 | 38 |
| 77 | 27 |
| 78 | 39 |
| 79 | 27 |
[0,0,1,0,2,0,3,0,4,0,5,0,6,0,7,0,8,0,9,0,10,9,11, 9,12,9,13,9,14,9,15,9,16,9,17,9,18,9,19,9,20,18, 21,18,22,18,23,18,24,18,25,18,26,18,27,18,28,18, 29,18,30,27,31,27,32,27,33,27,34,27,35,27,36,27, 37,27,38,27,39,27] |