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| n | a(n) |
|---|---|
| 1 | 2174 |
| 2 | 16056 |
| 3 | 108882 |
| 4 | 331884 |
| 5 | 2908368 |
| 6 | 22430004 |
| 7 | 65274264 |
| 8 | 634913568 |
| 9 | 5227152552 |
| 10 | 14646511152 |
| 11 | 151229828160 |
| 12 | 1283725464144 |
| 13 | 3514356996192 |
| 14 | 37441377415296 |
| 15 | 322401720092832 |
| 16 | 871431684513984 |
| 17 | 9433122571600128 |
| 18 | 81784148775215424 |
[2174,16056,108882,331884,2908368,22430004, 65274264,634913568,5227152552,14646511152, 151229828160,1283725464144,3514356996192, 37441377415296,322401720092832,871431684513984, 9433122571600128,81784148775215424] |