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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 3 |
| 4 | 6 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1065 |
| 8 | 6276 |
| 9 | 0 |
| 10 | 0 |
| 11 | 45949563 |
| 12 | 807343128 |
| 13 | 0 |
| 14 | 0 |
| 15 | 221797080594801 |
| 16 | 11812299253803024 |
| 17 | 0 |
| 18 | 0 |
| 19 | 117066491250943949567763 |
| 20 | 19100803250397148607852640 |
| 21 | 0 |
| 22 | 0 |
| 23 | 6685924427990669481186818442889689 |
| 24 | 3366736732994780307970181864980219968 |
[1,0,0,3,6,0,0,1065,6276,0,0,45949563,807343128,0, 0,221797080594801,11812299253803024,0,0, 117066491250943949567763, 19100803250397148607852640,0,0, 6685924427990669481186818442889689, 3366736732994780307970181864980219968] |