The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 9 |
| 1 | 1 |
| 2 | 18 |
| 3 | 1 |
| 4 | 18 |
| 5 | 1 |
| 6 | 18 |
| 7 | 1 |
| 8 | 18 |
| 9 | 1 |
| 10 | 18 |
| 11 | 1 |
| 12 | 18 |
| 13 | 1 |
| 14 | 18 |
| 15 | 1 |
| 16 | 18 |
| 17 | 1 |
| 18 | 18 |
| 19 | 1 |
| 20 | 18 |
| 21 | 1 |
| 22 | 18 |
| 23 | 1 |
| 24 | 18 |
| 25 | 1 |
| 26 | 18 |
| 27 | 1 |
| 28 | 18 |
| 29 | 1 |
| 30 | 18 |
| 31 | 1 |
| 32 | 18 |
| 33 | 1 |
| 34 | 18 |
| 35 | 1 |
| 36 | 18 |
| 37 | 1 |
| 38 | 18 |
| 39 | 1 |
| 40 | 18 |
| 41 | 1 |
| 42 | 18 |
| 43 | 1 |
| 44 | 18 |
| 45 | 1 |
| 46 | 18 |
| 47 | 1 |
| 48 | 18 |
| 49 | 1 |
| 50 | 18 |
| 51 | 1 |
| 52 | 18 |
| 53 | 1 |
| 54 | 18 |
| 55 | 1 |
| 56 | 18 |
| 57 | 1 |
| 58 | 18 |
| 59 | 1 |
| 60 | 18 |
| 61 | 1 |
| 62 | 18 |
| 63 | 1 |
| 64 | 18 |
| 65 | 1 |
[9,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1, 18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1, 18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1,18,1, 18,1,18,1,18,1] |