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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 13 |
| 5 | 31 |
| 6 | 66 |
| 7 | 123 |
| 8 | 214 |
| 9 | 346 |
| 10 | 535 |
| 11 | 790 |
| 12 | 1131 |
| 13 | 1569 |
| 14 | 2128 |
| 15 | 2821 |
| 16 | 3676 |
| 17 | 4708 |
| 18 | 5949 |
| 19 | 7416 |
| 20 | 9145 |
| 21 | 11155 |
| 22 | 13486 |
| 23 | 16159 |
| 24 | 19218 |
| 25 | 22686 |
| 26 | 26611 |
| 27 | 31018 |
| 28 | 35959 |
| 29 | 41461 |
| 30 | 47580 |
| 31 | 54345 |
| 32 | 61816 |
| 33 | 70024 |
| 34 | 79033 |
| 35 | 88876 |
| 36 | 99621 |
| 37 | 111303 |
| 38 | 123994 |
| 39 | 137731 |
| 40 | 152590 |
| 41 | 168610 |
| 42 | 185871 |
[0,1,4,13,31,66,123,214,346,535,790,1131,1569, 2128,2821,3676,4708,5949,7416,9145,11155,13486, 16159,19218,22686,26611,31018,35959,41461,47580, 54345,61816,70024,79033,88876,99621,111303,123994, 137731,152590,168610,185871] |