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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 128 |
| 3 | 4 |
| 4 | 46 |
| 5 | 368 |
| 6 | 758 |
| 7 | 2956 |
| 8 | 15494 |
| 9 | 44101 |
| 10 | 190416 |
| 11 | 843033 |
| 12 | 3033091 |
| 13 | 12413910 |
| 14 | 51530654 |
| 15 | 201376755 |
| 16 | 814350745 |
| 17 | 3304173349 |
| 18 | 13195116320 |
| 19 | 53237817569 |
| 20 | 214790465512 |
| 21 | 862745046281 |
| 22 | 3476740567795 |
| 23 | 14008372152609 |
| 24 | 56369700131001 |
[1,128,4,46,368,758,2956,15494,44101,190416, 843033,3033091,12413910,51530654,201376755, 814350745,3304173349,13195116320,53237817569, 214790465512,862745046281,3476740567795, 14008372152609,56369700131001] |