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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 79 |
| 4 | 86 |
| 5 | 681 |
| 6 | 767 |
| 7 | 2982 |
| 8 | 6731 |
| 9 | 36637 |
| 10 | 43368 |
| 11 | 80005 |
| 12 | 123373 |
| 13 | 573497 |
| 14 | 17328283 |
| 15 | 69886629 |
| 16 | 87214912 |
| 17 | 157101541 |
| 18 | 244316453 |
| 19 | 1378683806 |
| 20 | 3001684065 |
| 21 | 10383736001 |
| 22 | 13385420066 |
| 23 | 104081676463 |
| 24 | 117467096529 |
| 25 | 1396219738282 |
| 26 | 4306126311375 |
| 27 | 10008472361032 |
[1,2,7,79,86,681,767,2982,6731,36637,43368,80005, 123373,573497,17328283,69886629,87214912, 157101541,244316453,1378683806,3001684065, 10383736001,13385420066,104081676463,117467096529, 1396219738282,4306126311375,10008472361032] |