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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 4 |
| 3 | 66 |
| 4 | 16 |
| 5 | 66 |
| 6 | 2416 |
| 7 | 264 |
| 8 | 264 |
| 9 | 2416 |
| 10 | 156190 |
| 11 | 9664 |
| 12 | 4356 |
| 13 | 9664 |
| 14 | 156190 |
| 15 | 15724248 |
| 16 | 624760 |
| 17 | 159456 |
| 18 | 159456 |
| 19 | 624760 |
| 20 | 15724248 |
| 21 | 2275172004 |
| 22 | 62896992 |
| 23 | 10308540 |
| 24 | 5837056 |
| 25 | 10308540 |
| 26 | 62896992 |
| 27 | 2275172004 |
| 28 | 447538817472 |
| 29 | 9100688016 |
| 30 | 1037800368 |
| 31 | 377355040 |
| 32 | 377355040 |
| 33 | 1037800368 |
| 34 | 9100688016 |
| 35 | 447538817472 |
[1,4,4,66,16,66,2416,264,264,2416,156190,9664, 4356,9664,156190,15724248,624760,159456,159456, 624760,15724248,2275172004,62896992,10308540, 5837056,10308540,62896992,2275172004,447538817472, 9100688016,1037800368,377355040,377355040, 1037800368,9100688016,447538817472] |