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| n | a(n) |
|---|---|
| 1 | 356 |
| 2 | 2628 |
| 3 | 19248 |
| 4 | 145512 |
| 5 | 1095164 |
| 6 | 8284072 |
| 7 | 62569964 |
| 8 | 473123164 |
| 9 | 3575792884 |
| 10 | 27033634800 |
| 11 | 204346864164 |
| 12 | 1544799897832 |
| 13 | 11677617006096 |
| 14 | 88277308600968 |
| 15 | 667323988066868 |
| 16 | 5044620581563464 |
| 17 | 38134490738693688 |
| 18 | 288276154246399008 |
[356,2628,19248,145512,1095164,8284072,62569964, 473123164,3575792884,27033634800,204346864164, 1544799897832,11677617006096,88277308600968, 667323988066868,5044620581563464, 38134490738693688,288276154246399008] |