The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 3 |
| 7 | 4 |
| 8 | 5 |
| 9 | 8 |
| 10 | 9 |
| 11 | 12 |
| 12 | 17 |
| 13 | 25 |
| 14 | 30 |
| 15 | 43 |
| 16 | 52 |
| 17 | 73 |
| 18 | 93 |
| 19 | 119 |
| 20 | 147 |
| 21 | 191 |
| 22 | 238 |
| 23 | 303 |
| 24 | 370 |
| 25 | 473 |
| 26 | 573 |
| 27 | 721 |
| 28 | 873 |
| 29 | 1089 |
| 30 | 1326 |
| 31 | 1640 |
| 32 | 1954 |
| 33 | 2438 |
| 34 | 2900 |
| 35 | 3556 |
| 36 | 4240 |
| 37 | 5181 |
| 38 | 6140 |
| 39 | 7452 |
| 40 | 8851 |
| 41 | 10626 |
| 42 | 12600 |
| 43 | 15090 |
| 44 | 17812 |
| 45 | 21248 |
| 46 | 25063 |
| 47 | 29686 |
| 48 | 34969 |
| 49 | 41344 |
| 50 | 48465 |
[0,1,0,1,1,3,3,4,5,8,9,12,17,25,30,43,52,73,93, 119,147,191,238,303,370,473,573,721,873,1089,1326, 1640,1954,2438,2900,3556,4240,5181,6140,7452,8851, 10626,12600,15090,17812,21248,25063,29686,34969, 41344,48465] |