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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 10 |
| 3 | 20 |
| 4 | 40 |
| 5 | 50 |
| 6 | 80 |
| 7 | 230 |
| 8 | 460 |
| 9 | 920 |
| 10 | 5278 |
| 11 | 10556 |
| 12 | 21112 |
| 13 | 36946 |
| 14 | 42224 |
| 15 | 68614 |
| 16 | 73892 |
| 17 | 84448 |
| 18 | 136390 |
| 19 | 272780 |
| 20 | 545560 |
| 21 | 681950 |
| 22 | 6718090 |
| 23 | 10635086 |
| 24 | 21270172 |
| 25 | 42540344 |
| 26 | 74445602 |
| 27 | 85080688 |
| 28 | 478006930 |
| 29 | 956013860 |
[6,10,20,40,50,80,230,460,920,5278,10556,21112, 36946,42224,68614,73892,84448,136390,272780, 545560,681950,6718090,10635086,21270172,42540344, 74445602,85080688,478006930,956013860] |