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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 9 |
| 6 | 20 |
| 7 | 26 |
| 8 | 54 |
| 9 | 74 |
| 10 | 137 |
| 11 | 184 |
| 12 | 356 |
| 13 | 473 |
| 14 | 841 |
| 15 | 1154 |
| 16 | 2034 |
| 17 | 2742 |
| 18 | 4740 |
| 19 | 6405 |
| 20 | 10874 |
| 21 | 14794 |
| 22 | 24515 |
| 23 | 33246 |
| 24 | 54955 |
| 25 | 74380 |
| 26 | 120501 |
| 27 | 163828 |
| 28 | 263144 |
| 29 | 356621 |
| 30 | 567330 |
| 31 | 768854 |
| 32 | 1212354 |
| 33 | 1644335 |
| 34 | 2567636 |
| 35 | 3478873 |
| 36 | 5403223 |
| 37 | 7314662 |
| 38 | 11265825 |
| 39 | 15258443 |
| 40 | 23363143 |
| 41 | 31608055 |
| 42 | 48113280 |
| 43 | 65063640 |
| 44 | 98501538 |
| 45 | 133168305 |
| 46 | 200503864 |
[1,1,2,3,7,9,20,26,54,74,137,184,356,473,841,1154, 2034,2742,4740,6405,10874,14794,24515,33246,54955, 74380,120501,163828,263144,356621,567330,768854, 1212354,1644335,2567636,3478873,5403223,7314662, 11265825,15258443,23363143,31608055,48113280, 65063640,98501538,133168305,200503864] |