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A221311 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 10 |
| 4 | 1 |
| 5 | 26 |
| 6 | 87 |
| 7 | 1 |
| 8 | 42 |
| 9 | 447 |
| 10 | 740 |
| 11 | 1 |
| 12 | 58 |
| 13 | 999 |
| 14 | 6820 |
| 15 | 6285 |
| 16 | 1 |
| 17 | 74 |
| 18 | 1935 |
| 19 | 20708 |
[1,1,10,1,26,87,1,42,447,740,1,58,999,6820,6285,1, 74,1935,20708] |