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| n | a(n) |
|---|---|
| 2 | 3 |
| 3 | 3 |
| 4 | 3 |
| 5 | 73 |
| 6 | 523 |
| 7 | 6581 |
| 8 | 10753 |
| 9 | 43103 |
| 10 | 43103 |
| 11 | 43103 |
| 12 | 55457 |
| 13 | 55457 |
| 14 | 28751773 |
| 15 | 278689963 |
| 16 | 278689963 |
| 17 | 784284211 |
| 18 | 4440915607 |
| 19 | 8340839629 |
| 20 | 30651695947 |
| 21 | 50246427391 |
| 22 | 50246427391 |
[3,3,3,73,523,6581,10753,43103,43103,43103,55457, 55457,28751773,278689963,278689963,784284211, 4440915607,8340839629,30651695947,50246427391, 50246427391] |