| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 4 |
| 7 | 7 |
| 8 | 9 |
| 9 | 16 |
| 10 | 21 |
| 11 | 32 |
| 12 | 43 |
| 13 | 63 |
| 14 | 84 |
| 15 | 122 |
| 16 | 158 |
| 17 | 220 |
| 18 | 293 |
| 19 | 393 |
| 20 | 511 |
| 21 | 685 |
| 22 | 881 |
| 23 | 1156 |
| 24 | 1485 |
| 25 | 1925 |
| 26 | 2445 |
| 27 | 3147 |
| 28 | 3952 |
| 29 | 5019 |
| 30 | 6323 |
| 31 | 7924 |
| 32 | 9862 |
| 33 | 12336 |
| 34 | 15259 |
| 35 | 18900 |
| 36 | 23294 |
| 37 | 28646 |
| 38 | 35091 |
| 39 | 42985 |
| 40 | 52341 |
| 41 | 63694 |
| 42 | 77336 |
| 43 | 93588 |
| 44 | 112973 |
| 45 | 136367 |
| 46 | 163874 |
| 47 | 196638 |
[1,0,0,1,1,3,4,7,9,16,21,32,43,63,84,122,158,220, 293,393,511,685,881,1156,1485,1925,2445,3147,3952, 5019,6323,7924,9862,12336,15259,18900,23294,28646, 35091,42985,52341,63694,77336,93588,112973,136367, 163874,196638] |