n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 12 |
6 | 32 |
7 | 83 |
8 | 223 |
9 | 594 |
10 | 1600 |
11 | 4297 |
12 | 11589 |
13 | 31216 |
14 | 84212 |
15 | 227091 |
16 | 612712 |
17 | 1652913 |
18 | 4459962 |
19 | 12033405 |
20 | 32469682 |
21 | 87611105 |
22 | 236402465 |
23 | 637884103 |
24 | 1721218224 |
25 | 4644392797 |
26 | 12532091909 |
27 | 33815653370 |
28 | 91245738923 |
[1,1,2,5,12,32,83,223,594,1600,4297,11589,31216, 84212,227091,612712,1652913,4459962,12033405, 32469682,87611105,236402465,637884103,1721218224, 4644392797,12532091909,33815653370,91245738923] |