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| n | a(n) |
|---|---|
| 1 | 74496 |
| 2 | 168928 |
| 3 | 360760 |
| 4 | 1000264 |
| 5 | 2557656 |
| 6 | 8002936 |
| 7 | 23194936 |
| 8 | 78550072 |
| 9 | 248588376 |
| 10 | 891039928 |
| 11 | 3005210680 |
| 12 | 11247553144 |
| 13 | 39802610136 |
| 14 | 154128225976 |
| 15 | 566417244856 |
| 16 | 2254268472952 |
| 17 | 8541311322456 |
| 18 | 34760552342968 |
| 19 | 135063296947000 |
[74496,168928,360760,1000264,2557656,8002936, 23194936,78550072,248588376,891039928,3005210680, 11247553144,39802610136,154128225976,566417244856, 2254268472952,8541311322456,34760552342968, 135063296947000] |