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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 4 |
| 3 | 7 |
| 4 | 11 |
| 5 | 40 |
| 6 | 51 |
| 7 | 346 |
| 8 | 397 |
| 9 | 743 |
| 10 | 4855 |
| 11 | 5598 |
| 12 | 21649 |
| 13 | 27247 |
| 14 | 48896 |
| 15 | 76143 |
| 16 | 277325 |
| 17 | 16160993 |
| 18 | 48760304 |
| 19 | 64921297 |
| 20 | 113681601 |
| 21 | 178602898 |
| 22 | 649490295 |
| 23 | 828093193 |
| 24 | 5618049453 |
| 25 | 6446142646 |
| 26 | 12064192099 |
| 27 | 78831295240 |
| 28 | 90895487339 |
| 29 | 351517757257 |
| 30 | 442413244596 |
[1,3,4,7,11,40,51,346,397,743,4855,5598,21649, 27247,48896,76143,277325,16160993,48760304, 64921297,113681601,178602898,649490295,828093193, 5618049453,6446142646,12064192099,78831295240, 90895487339,351517757257,442413244596] |