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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 5 |
| 4 | 21 |
| 5 | 37 |
| 6 | 93 |
| 7 | 133 |
| 8 | 463 |
| 9 | 1759 |
| 10 | 2676 |
| 11 | 4328 |
| 12 | 8931 |
| 13 | 10919 |
| 14 | 17929 |
| 15 | 22663 |
| 16 | 43451 |
| 17 | 45355 |
| 18 | 55533 |
| 19 | 60551 |
| 20 | 92233 |
| 21 | 112723 |
| 22 | 190371 |
| 23 | 485648 |
| 24 | 791123 |
| 25 | 1072318 |
| 26 | 1458993 |
| 27 | 2617393 |
| 28 | 4161343 |
| 29 | 7605593 |
| 30 | 8632704 |
| 31 | 14214953 |
| 32 | 22690938 |
| 33 | 24886878 |
| 34 | 40268266 |
| 35 | 75544661 |
| 36 | 106544643 |
| 37 | 236451678 |
[0,2,5,21,37,93,133,463,1759,2676,4328,8931,10919, 17929,22663,43451,45355,55533,60551,92233,112723, 190371,485648,791123,1072318,1458993,2617393, 4161343,7605593,8632704,14214953,22690938, 24886878,40268266,75544661,106544643,236451678] |