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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 11 |
| 5 | 30 |
| 6 | 64 |
| 7 | 178 |
| 8 | 382 |
| 9 | 758 |
| 10 | 1367 |
| 11 | 3620 |
| 12 | 7193 |
| 13 | 19707 |
| 14 | 40867 |
| 15 | 75706 |
| 16 | 130017 |
| 17 | 339506 |
| 18 | 667390 |
| 19 | 1824656 |
| 20 | 3724917 |
| 21 | 6785689 |
| 22 | 11545898 |
| 23 | 30099090 |
| 24 | 58833294 |
| 25 | 105348580 |
| 26 | 176098677 |
| 27 | 282847446 |
| 28 | 438090287 |
| 29 | 1095200628 |
| 30 | 2057512312 |
| 31 | 5494259815 |
| 32 | 10925293558 |
| 33 | 19311381148 |
[1,2,5,11,30,64,178,382,758,1367,3620,7193,19707, 40867,75706,130017,339506,667390,1824656,3724917, 6785689,11545898,30099090,58833294,105348580, 176098677,282847446,438090287,1095200628, 2057512312,5494259815,10925293558,19311381148] |