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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 6 |
| 3 | 147 |
| 4 | 18 |
| 5 | 448 |
| 6 | 281 |
| 7 | 1868 |
| 8 | 6036 |
| 9 | 16344 |
| 10 | 110672 |
| 11 | 332791 |
| 12 | 1836532 |
| 13 | 7975778 |
| 14 | 32963967 |
| 15 | 175388042 |
| 16 | 679563302 |
| 17 | 3615591697 |
| 18 | 15049212425 |
| 19 | 73677748194 |
| 20 | 333969856156 |
| 21 | 1532899327683 |
| 22 | 7260258957631 |
| 23 | 32677907934863 |
| 24 | 155388905659519 |
[16,6,147,18,448,281,1868,6036,16344,110672, 332791,1836532,7975778,32963967,175388042, 679563302,3615591697,15049212425,73677748194, 333969856156,1532899327683,7260258957631, 32677907934863,155388905659519] |