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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 10 |
| 4 | 24 |
| 5 | 51 |
| 6 | 109 |
| 7 | 222 |
| 8 | 452 |
| 9 | 890 |
| 10 | 1732 |
| 11 | 3298 |
| 12 | 6204 |
| 13 | 11470 |
| 14 | 20970 |
| 15 | 37842 |
| 16 | 67572 |
| 17 | 119368 |
| 18 | 208943 |
| 19 | 362389 |
| 20 | 623438 |
| 21 | 1064061 |
| 22 | 1802976 |
| 23 | 3033711 |
| 24 | 5071418 |
| 25 | 8424788 |
| 26 | 13913192 |
| 27 | 22847028 |
| 28 | 37315678 |
| 29 | 60631940 |
| 30 | 98030644 |
| 31 | 157743554 |
| 32 | 252671288 |
| 33 | 402944731 |
| 34 | 639871871 |
| 35 | 1011956958 |
[1,1,4,10,24,51,109,222,452,890,1732,3298,6204, 11470,20970,37842,67572,119368,208943,362389, 623438,1064061,1802976,3033711,5071418,8424788, 13913192,22847028,37315678,60631940,98030644, 157743554,252671288,402944731,639871871, 1011956958] |