The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 14 |
| 3 | 44 |
| 4 | 129 |
| 5 | 316 |
| 6 | 714 |
| 7 | 1452 |
| 8 | 2775 |
| 9 | 4963 |
| 10 | 8478 |
| 11 | 13838 |
| 12 | 21827 |
| 13 | 33306 |
| 14 | 49504 |
| 15 | 71754 |
| 16 | 101871 |
| 17 | 141807 |
| 18 | 194128 |
| 19 | 261570 |
| 20 | 347633 |
| 21 | 456026 |
| 22 | 591384 |
| 23 | 758596 |
| 24 | 963657 |
| 25 | 1212861 |
| 26 | 1513806 |
| 27 | 1874440 |
| 28 | 2304225 |
| 29 | 2813030 |
| 30 | 3412466 |
| 31 | 4114608 |
| 32 | 4933519 |
[1,3,14,44,129,316,714,1452,2775,4963,8478,13838, 21827,33306,49504,71754,101871,141807,194128, 261570,347633,456026,591384,758596,963657,1212861, 1513806,1874440,2304225,2813030,3412466,4114608, 4933519] |