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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 29 |
| 5 | 111 |
| 6 | 103 |
| 7 | 472 |
| 8 | 2369 |
| 9 | 12965 |
| 10 | 30791 |
| 11 | 197346 |
| 12 | 452993 |
| 13 | 3337271 |
| 14 | 7485915 |
| 15 | 4160656 |
| 16 | 18358463 |
| 17 | 170991927 |
| 18 | 124184839 |
| 19 | 1278605110 |
| 20 | 110351535 |
| 21 | 98802055 |
| 22 | 211524139 |
| 23 | 2595194516 |
| 24 | 16562041459 |
| 25 | 219589922071 |
| 26 | 464651871609 |
| 27 | 2207044831642 |
| 28 | 4649180818987 |
| 29 | 70862100349605 |
| 30 | 148699793966557 |
[0,1,4,29,111,103,472,2369,12965,30791,197346, 452993,3337271,7485915,4160656,18358463,170991927, 124184839,1278605110,110351535,98802055,211524139, 2595194516,16562041459,219589922071,464651871609, 2207044831642,4649180818987,70862100349605, 148699793966557] |