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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 11 |
| 4 | 40 |
| 5 | 94 |
| 6 | 291 |
| 7 | 776 |
| 8 | 2269 |
| 9 | 6275 |
| 10 | 17985 |
| 11 | 50548 |
| 12 | 143589 |
| 13 | 405620 |
| 14 | 1149709 |
| 15 | 3252139 |
| 16 | 9211083 |
| 17 | 26070305 |
| 18 | 73816122 |
| 19 | 208963020 |
| 20 | 591618663 |
| 21 | 1674877081 |
| 22 | 4741816884 |
| 23 | 13424434567 |
| 24 | 38006135552 |
| 25 | 107599067346 |
| 26 | 304624934972 |
[1,8,11,40,94,291,776,2269,6275,17985,50548, 143589,405620,1149709,3252139,9211083,26070305, 73816122,208963020,591618663,1674877081, 4741816884,13424434567,38006135552,107599067346, 304624934972] |