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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 14 |
| 3 | 44 |
| 4 | 110 |
| 5 | 152 |
| 6 | 884 |
| 7 | 2144 |
| 8 | 8384 |
| 9 | 18632 |
| 10 | 116624 |
| 11 | 8394752 |
| 12 | 15370304 |
| 13 | 73995392 |
| 14 | 536920064 |
| 15 | 2147581952 |
| 16 | 34360131584 |
| 17 | 27034175140420610 |
| 18 | 36028797421617152 |
| 19 | 576460753914036224 |
[5,14,44,110,152,884,2144,8384,18632,116624, 8394752,15370304,73995392,536920064,2147581952, 34360131584,27034175140420610,36028797421617152, 576460753914036224] |