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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 24 |
| 2 | 39 |
| 3 | 104 |
| 4 | 388 |
| 5 | 578 |
| 6 | 669 |
| 7 | 2746 |
| 8 | 2819 |
| 9 | 3013 |
| 10 | 5169 |
| 11 | 17398 |
| 12 | 19094 |
| 13 | 21359 |
| 14 | 23116 |
| 15 | 24950 |
| 16 | 48267 |
| 17 | 48487 |
| 18 | 105621 |
| 19 | 215513 |
| 20 | 4706574 |
| 21 | 16400064 |
| 22 | 106043719 |
| 23 | 137338247 |
| 24 | 243888200 |
| 25 | 478287113 |
| 26 | 673135223 |
| 27 | 3077440133 |
| 28 | 6453969104 |
[2,24,39,104,388,578,669,2746,2819,3013,5169, 17398,19094,21359,23116,24950,48267,48487,105621, 215513,4706574,16400064,106043719,137338247, 243888200,478287113,673135223,3077440133, 6453969104] |