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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 10 |
| 4 | 19 |
| 5 | 38 |
| 6 | 73 |
| 7 | 134 |
| 8 | 242 |
| 9 | 430 |
| 10 | 749 |
| 11 | 1282 |
| 12 | 2171 |
| 13 | 3622 |
| 14 | 5979 |
| 15 | 9770 |
| 16 | 15802 |
| 17 | 25334 |
| 18 | 40288 |
| 19 | 63560 |
| 20 | 99554 |
| 21 | 154884 |
| 22 | 239397 |
| 23 | 367800 |
| 24 | 561846 |
| 25 | 853584 |
| 26 | 1290107 |
| 27 | 1940304 |
| 28 | 2904447 |
| 29 | 4328184 |
| 30 | 6422164 |
| 31 | 9489940 |
| 32 | 13967783 |
| 33 | 20480534 |
| 34 | 29920277 |
| 35 | 43557272 |
| 36 | 63194864 |
[1,2,4,10,19,38,73,134,242,430,749,1282,2171,3622, 5979,9770,15802,25334,40288,63560,99554,154884, 239397,367800,561846,853584,1290107,1940304, 2904447,4328184,6422164,9489940,13967783,20480534, 29920277,43557272,63194864] |