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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 20 |
| 3 | 114 |
| 4 | 162 |
| 5 | 494 |
| 6 | 710 |
| 7 | 1976 |
| 8 | 2884 |
| 9 | 7958 |
| 10 | 12074 |
| 11 | 31824 |
| 12 | 49078 |
| 13 | 130758 |
| 14 | 197208 |
| 15 | 535668 |
| 16 | 803976 |
| 17 | 2179014 |
| 18 | 3283200 |
| 19 | 8870448 |
| 20 | 13320072 |
| 21 | 36010660 |
| 22 | 54089046 |
| 23 | 145864864 |
| 24 | 219566360 |
| 25 | 590450318 |
| 26 | 889464830 |
| 27 | 2389662890 |
| 28 | 3599725594 |
[16,20,114,162,494,710,1976,2884,7958,12074,31824, 49078,130758,197208,535668,803976,2179014,3283200, 8870448,13320072,36010660,54089046,145864864, 219566360,590450318,889464830,2389662890, 3599725594] |