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| n | a(n) |
|---|---|
| 3 | 2 |
| 4 | 7 |
| 5 | 23 |
| 6 | 55 |
| 7 | 147 |
| 8 | 281 |
| 9 | 633 |
| 10 | 1241 |
| 11 | 2849 |
| 12 | 5187 |
| 13 | 11195 |
| 14 | 21369 |
| 15 | 47933 |
| 16 | 83821 |
| 17 | 174245 |
| 18 | 324571 |
| 19 | 712247 |
| 20 | 1263211 |
| 21 | 2660843 |
| 22 | 4999291 |
| 23 | 11056139 |
| 24 | 19236203 |
| 25 | 39793055 |
| 26 | 73882568 |
| 27 | 161646306 |
| 28 | 286178632 |
| 29 | 601791336 |
| 30 | 1129403320 |
| 31 | 2495184864 |
| 32 | 4326802772 |
| 33 | 8921711316 |
| 34 | 16528692452 |
[2,7,23,55,147,281,633,1241,2849,5187,11195,21369, 47933,83821,174245,324571,712247,1263211,2660843, 4999291,11056139,19236203,39793055,73882568, 161646306,286178632,601791336,1129403320, 2495184864,4326802772,8921711316,16528692452] |