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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 4 |
| 4 | 11 |
| 5 | 20 |
| 6 | 50 |
| 7 | 93 |
| 8 | 185 |
| 9 | 368 |
| 10 | 920 |
| 11 | 1748 |
| 12 | 3453 |
| 13 | 6876 |
| 14 | 13743 |
| 15 | 27479 |
| 16 | 54957 |
| 17 | 109912 |
| 18 | 274780 |
| 19 | 522082 |
| 20 | 1030428 |
| 21 | 2053989 |
| 22 | 4104555 |
| 23 | 8207405 |
| 24 | 16413982 |
| 25 | 32827412 |
| 26 | 65654641 |
| 27 | 131309190 |
| 28 | 262618337 |
| 29 | 525236644 |
| 30 | 1050473279 |
| 31 | 2100946551 |
| 32 | 4201893101 |
| 33 | 8403786200 |
| 34 | 21009465500 |
| 35 | 39917984450 |
[1,3,4,11,20,50,93,185,368,920,1748,3453,6876, 13743,27479,54957,109912,274780,522082,1030428, 2053989,4104555,8207405,16413982,32827412, 65654641,131309190,262618337,525236644,1050473279, 2100946551,4201893101,8403786200,21009465500, 39917984450] |