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A042035 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 4 |
| 3 | 23 |
| 4 | 27 |
| 5 | 239 |
| 6 | 505 |
| 7 | 2259 |
| 8 | 2764 |
| 9 | 7787 |
| 10 | 26125 |
| 11 | 33912 |
| 12 | 60037 |
| 13 | 694319 |
| 14 | 10474822 |
| 15 | 21643963 |
| 16 | 53762748 |
| 17 | 75406711 |
| 18 | 129169459 |
| 19 | 204576170 |
| 20 | 333745629 |
| 21 | 538321799 |
| 22 | 872067428 |
| 23 | 2282456655 |
| 24 | 5436980738 |
| 25 | 83837167725 |
| 26 | 927645825713 |
| 27 | 1011482993438 |
| 28 | 1939128819151 |
[1,3,4,23,27,239,505,2259,2764,7787,26125,33912, 60037,694319,10474822,21643963,53762748,75406711, 129169459,204576170,333745629,538321799,872067428, 2282456655,5436980738,83837167725,927645825713, 1011482993438,1939128819151] |