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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 91 |
| 3 | 580 |
| 4 | 2574 |
| 5 | 8939 |
| 6 | 26146 |
| 7 | 67105 |
| 8 | 155645 |
| 9 | 332729 |
| 10 | 665317 |
| 11 | 1257898 |
| 12 | 2268061 |
| 13 | 3925640 |
| 14 | 6557703 |
| 15 | 10618287 |
| 16 | 16725802 |
| 17 | 25706637 |
| 18 | 38648840 |
| 19 | 56963074 |
| 20 | 82456645 |
| 21 | 117416301 |
| 22 | 164706836 |
| 23 | 227880334 |
| 24 | 311304767 |
| 25 | 420304310 |
| 26 | 561323415 |
| 27 | 742104234 |
[8,91,580,2574,8939,26146,67105,155645,332729, 665317,1257898,2268061,3925640,6557703,10618287, 16725802,25706637,38648840,56963074,82456645, 117416301,164706836,227880334,311304767,420304310, 561323415,742104234] |