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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | -1 |
| 4 | 3 |
| 5 | 2 |
| 6 | -2 |
| 7 | 4 |
| 8 | 7 |
| 9 | 2 |
| 10 | -1 |
| 11 | 5 |
| 12 | 14 |
| 13 | 18 |
| 14 | 2 |
| 15 | 1 |
| 16 | 6 |
| 17 | 23 |
| 18 | 52 |
| 19 | 47 |
| 20 | 2 |
| 21 | 2 |
| 22 | 7 |
| 23 | 34 |
| 24 | 110 |
| 25 | 194 |
| 26 | 123 |
| 27 | 2 |
| 28 | 1 |
| 29 | 8 |
| 30 | 47 |
| 31 | 198 |
| 32 | 527 |
| 33 | 724 |
| 34 | 322 |
| 35 | 2 |
| 36 | -1 |
| 37 | 9 |
| 38 | 62 |
| 39 | 322 |
| 40 | 1154 |
| 41 | 2525 |
| 42 | 2702 |
| 43 | 843 |
| 44 | 2 |
| 45 | -2 |
| 46 | 10 |
| 47 | 79 |
| 48 | 488 |
| 49 | 2207 |
| 50 | 6726 |
| 51 | 12098 |
| 52 | 10084 |
| 53 | 2207 |
| 54 | 2 |
| 55 | -1 |
| 56 | 11 |
| 57 | 98 |
| 58 | 702 |
| 59 | 3842 |
| 60 | 15127 |
| 61 | 39202 |
| 62 | 57965 |
| 63 | 37634 |
| 64 | 5778 |
| 65 | 2 |
| 66 | 1 |
[1,2,-1,3,2,-2,4,7,2,-1,5,14,18,2,1,6,23,52,47,2, 2,7,34,110,194,123,2,1,8,47,198,527,724,322,2,-1, 9,62,322,1154,2525,2702,843,2,-2,10,79,488,2207, 6726,12098,10084,2207,2,-1,11,98,702,3842,15127, 39202,57965,37634,5778,2,1] |