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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 12 |
| 5 | 26 |
| 6 | 58 |
| 7 | 131 |
| 8 | 295 |
| 9 | 662 |
| 10 | 1487 |
| 11 | 3342 |
| 12 | 7510 |
| 13 | 16874 |
| 14 | 37915 |
| 15 | 85195 |
| 16 | 191432 |
| 17 | 430143 |
| 18 | 966522 |
| 19 | 2171756 |
| 20 | 4879892 |
| 21 | 10965017 |
| 22 | 24638169 |
| 23 | 55361464 |
| 24 | 124396081 |
| 25 | 279515456 |
| 26 | 628065528 |
| 27 | 1411250432 |
| 28 | 3171050937 |
| 29 | 7125286777 |
| 30 | 16010374058 |
| 31 | 35974983957 |
| 32 | 80835055196 |
[1,2,5,12,26,58,131,295,662,1487,3342,7510,16874, 37915,85195,191432,430143,966522,2171756,4879892, 10965017,24638169,55361464,124396081,279515456, 628065528,1411250432,3171050937,7125286777, 16010374058,35974983957,80835055196] |