The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 11 |
| 5 | 27 |
| 6 | 44 |
| 7 | 93 |
| 8 | 149 |
| 9 | 271 |
| 10 | 432 |
| 11 | 744 |
| 12 | 1109 |
| 13 | 1849 |
| 14 | 2764 |
| 15 | 4287 |
| 16 | 6328 |
| 17 | 9673 |
| 18 | 13853 |
| 19 | 20717 |
| 20 | 29343 |
| 21 | 42609 |
| 22 | 60100 |
| 23 | 85893 |
| 24 | 118475 |
| 25 | 167453 |
| 26 | 230080 |
| 27 | 318654 |
| 28 | 433763 |
| 29 | 595921 |
| 30 | 800878 |
| 31 | 1090189 |
| 32 | 1456095 |
| 33 | 1957032 |
| 34 | 2600199 |
| 35 | 3465459 |
| 36 | 4558785 |
| 37 | 6041381 |
| 38 | 7908681 |
[1,1,2,6,11,27,44,93,149,271,432,744,1109,1849, 2764,4287,6328,9673,13853,20717,29343,42609,60100, 85893,118475,167453,230080,318654,433763,595921, 800878,1090189,1456095,1957032,2600199,3465459, 4558785,6041381,7908681] |