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| n | a(n) |
|---|---|
| 0 | 11 |
| 1 | 73 |
| 2 | 387 |
| 3 | 1876 |
| 4 | 8670 |
| 5 | 38907 |
| 6 | 171171 |
| 7 | 742456 |
| 8 | 3186378 |
| 9 | 13562770 |
| 10 | 57352526 |
| 11 | 241234488 |
| 12 | 1010195420 |
| 13 | 4214583135 |
| 14 | 17527709475 |
| 15 | 72695369520 |
| 16 | 300782736210 |
| 17 | 1241908383870 |
| 18 | 5118246664410 |
| 19 | 21058891783800 |
| 20 | 86518038936420 |
| 21 | 354975217564110 |
| 22 | 1454668818567822 |
| 23 | 5954594437631376 |
| 24 | 24350248227272100 |
| 25 | 99484144007729572 |
[11,73,387,1876,8670,38907,171171,742456,3186378, 13562770,57352526,241234488,1010195420,4214583135, 17527709475,72695369520,300782736210, 1241908383870,5118246664410,21058891783800, 86518038936420,354975217564110,1454668818567822, 5954594437631376,24350248227272100, 99484144007729572] |