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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 78 |
| 4 | 9122 |
| 5 | 3631230 |
| 6 | 5156504762 |
| 7 | 27001050877878 |
| 8 | 534501094899058562 |
| 9 | 40722145926117903423870 |
| 10 | 12087546475818254213970440762 |
| 11 | 14092107560516965761680288437626678 |
| 12 | 64865786413692603712581708653173229695202 |
| 13 | 1182842929982145786766341064087435441895201131230 |
[0,2,78,9122,3631230,5156504762,27001050877878, 534501094899058562,40722145926117903423870, 12087546475818254213970440762, 14092107560516965761680288437626678, 64865786413692603712581708653173229695202, 1182842929982145786766341064087435441895201131230] |