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| n | a(n) |
|---|---|
| 0 | 864 |
| 1 | 5635 |
| 2 | 35840 |
| 3 | 226080 |
| 4 | 1424736 |
| 5 | 8975232 |
| 6 | 56531412 |
| 7 | 356045600 |
| 8 | 2242419040 |
| 9 | 14122994787 |
| 10 | 88948032416 |
| 11 | 560203336285 |
| 12 | 3528214538112 |
| 13 | 22221034368624 |
| 14 | 139950209558628 |
| 15 | 881419864147200 |
| 16 | 5551266971808376 |
| 17 | 34962412626016064 |
| 18 | 220196633083726032 |
| 19 | 1386819546435968365 |
| 20 | 8734322716128534368 |
[864,5635,35840,226080,1424736,8975232,56531412, 356045600,2242419040,14122994787,88948032416, 560203336285,3528214538112,22221034368624, 139950209558628,881419864147200,5551266971808376, 34962412626016064,220196633083726032, 1386819546435968365,8734322716128534368] |