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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 120 |
| 3 | 174 |
| 4 | 619 |
| 5 | 2995 |
| 6 | 11977 |
| 7 | 48677 |
| 8 | 201771 |
| 9 | 826524 |
| 10 | 3410229 |
| 11 | 14060965 |
| 12 | 57930710 |
| 13 | 238839969 |
| 14 | 984504319 |
| 15 | 4058151550 |
| 16 | 16728520173 |
| 17 | 68956735361 |
| 18 | 284248758531 |
| 19 | 1171712068704 |
| 20 | 4829948227186 |
| 21 | 19909686588334 |
| 22 | 82070353079883 |
[16,120,174,619,2995,11977,48677,201771,826524, 3410229,14060965,57930710,238839969,984504319, 4058151550,16728520173,68956735361,284248758531, 1171712068704,4829948227186,19909686588334, 82070353079883] |