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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 8 |
| 5 | 64 |
| 6 | 1014 |
| 7 | 32593 |
| 8 | 2093589 |
| 9 | 268333725 |
| 10 | 68714765337 |
| 11 | 35183979518038 |
| 12 | 36028733659454920 |
| 13 | 73786955927716463496 |
| 14 | 302231441864128208088266 |
| 15 | 2475880062024448199702310129 |
| 16 | 40564819165779582804001294004849 |
| 17 | 1329227995578862816338009185350962977 |
| 18 | 87112285929737129482236375622145146977689 |
[1,1,1,2,8,64,1014,32593,2093589,268333725, 68714765337,35183979518038,36028733659454920, 73786955927716463496,302231441864128208088266, 2475880062024448199702310129, 40564819165779582804001294004849, 1329227995578862816338009185350962977, 87112285929737129482236375622145146977689] |