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A178938 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 3 |
| 5 | 4 |
| 6 | 8 |
| 7 | 18 |
| 8 | 16 |
| 9 | 5 |
| 10 | 9 |
| 11 | 8 |
| 12 | 18 |
| 13 | 16 |
| 14 | 9 |
| 15 | 7 |
| 16 | 16 |
| 17 | 15 |
| 18 | 21 |
| 19 | 16 |
| 20 | 9 |
| 21 | 16 |
[1,2,4,3,4,8,18,16,5,9,8,18,16,9,7,16,15,21,16,9, 16] |