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| n | a(n) |
|---|---|
| 1 | 1573 |
| 2 | 8352 |
| 3 | 60245 |
| 4 | 391934 |
| 5 | 2547765 |
| 6 | 16789564 |
| 7 | 110131513 |
| 8 | 722619033 |
| 9 | 4749948377 |
| 10 | 31181555206 |
| 11 | 204626875063 |
| 12 | 1343622742626 |
| 13 | 8822820748320 |
| 14 | 57923805951945 |
| 15 | 380282422081555 |
| 16 | 2496764092390189 |
| 17 | 16392666023439258 |
| 18 | 107625734028805523 |
[1573,8352,60245,391934,2547765,16789564, 110131513,722619033,4749948377,31181555206, 204626875063,1343622742626,8822820748320, 57923805951945,380282422081555,2496764092390189, 16392666023439258,107625734028805523] |