The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 18 |
| 6 | 18 |
| 7 | 18 |
| 8 | 18 |
| 9 | 18 |
| 10 | 18 |
| 11 | 18 |
| 12 | 18 |
| 13 | 18 |
| 14 | 18 |
| 15 | 18 |
| 16 | 18 |
| 17 | 18 |
| 18 | 18 |
| 19 | 18 |
| 20 | 18 |
| 21 | 18 |
| 22 | 18 |
| 23 | 18 |
| 24 | 18 |
| 25 | 18 |
| 26 | 18 |
| 27 | 18 |
| 28 | 18 |
| 29 | 18 |
| 30 | 18 |
| 31 | 18 |
| 32 | 18 |
| 33 | 18 |
| 34 | 18 |
| 35 | 18 |
| 36 | 18 |
| 37 | 18 |
| 38 | 18 |
| 39 | 18 |
| 40 | 18 |
| 41 | 18 |
| 42 | 18 |
| 43 | 18 |
| 44 | 18 |
| 45 | 18 |
| 46 | 18 |
| 47 | 18 |
| 48 | 18 |
| 49 | 18 |
| 50 | 181 |
| 51 | 181 |
| 52 | 181 |
| 53 | 181 |
| 54 | 181 |
| 55 | 181 |
| 56 | 181 |
| 57 | 181 |
| 58 | 181 |
| 59 | 181 |
| 60 | 181 |
| 61 | 181 |
| 62 | 181 |
| 63 | 181 |
| 64 | 181 |
| 65 | 181 |
[2,1,1,1,18,18,18,18,18,18,18,18,18,18,18,18,18, 18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18, 18,18,18,18,18,18,18,18,18,18,18,18,18,18,18,18, 181,181,181,181,181,181,181,181,181,181,181,181, 181,181,181,181] |