The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 2 |
| 3 | 0 |
| 4 | 4 |
| 5 | 0 |
| 6 | 8 |
| 7 | 7 |
| 8 | 16 |
| 9 | 14 |
| 10 | 32 |
| 11 | 28 |
| 12 | 76 |
| 13 | 56 |
| 14 | 201 |
| 15 | 112 |
| 16 | 402 |
| 17 | 241 |
| 18 | 804 |
| 19 | 566 |
| 20 | 1608 |
| 21 | 1475 |
| 22 | 3238 |
| 23 | 2950 |
| 24 | 6739 |
| 25 | 5900 |
| 26 | 14066 |
| 27 | 11827 |
| 28 | 30533 |
| 29 | 24012 |
| 30 | 61066 |
| 31 | 49865 |
| 32 | 122164 |
| 33 | 103846 |
| 34 | 245070 |
| 35 | 224499 |
| 36 | 494374 |
| 37 | 449035 |
| 38 | 1001635 |
| 39 | 898992 |
| 40 | 2032082 |
| 41 | 1805626 |
| 42 | 4181855 |
| 43 | 3640890 |
[1,0,2,0,4,0,8,7,16,14,32,28,76,56,201,112,402, 241,804,566,1608,1475,3238,2950,6739,5900,14066, 11827,30533,24012,61066,49865,122164,103846, 245070,224499,494374,449035,1001635,898992, 2032082,1805626,4181855,3640890] |