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| n | a(n) |
|---|---|
| 0 | 18 |
| 1 | 19 |
| 2 | 170 |
| 3 | 359 |
| 4 | 3042 |
| 5 | 3401 |
| 6 | 125478 |
| 7 | 128879 |
| 8 | 1156510 |
| 9 | 2441899 |
| 10 | 20691702 |
| 11 | 23133601 |
| 12 | 853501338 |
| 13 | 876634939 |
| 14 | 7866580850 |
| 15 | 16609796639 |
| 16 | 140744953962 |
| 17 | 157354750601 |
| 18 | 5805515975598 |
| 19 | 5962870726199 |
| 20 | 53508481785190 |
| 21 | 112979834296579 |
| 22 | 957347156157822 |
[18,19,170,359,3042,3401,125478,128879,1156510, 2441899,20691702,23133601,853501338,876634939, 7866580850,16609796639,140744953962,157354750601, 5805515975598,5962870726199,53508481785190, 112979834296579,957347156157822] |