n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 18 |
5 | 46 |
6 | 115 |
7 | 301 |
8 | 792 |
9 | 2068 |
10 | 5380 |
11 | 14020 |
12 | 36581 |
13 | 95413 |
14 | 248786 |
15 | 648714 |
16 | 1691686 |
17 | 4411530 |
18 | 11503991 |
19 | 29998953 |
20 | 78228640 |
21 | 203998184 |
22 | 531969064 |
23 | 1387222648 |
24 | 3617479225 |
25 | 9433351129 |
26 | 24599481138 |
27 | 64148406350 |
28 | 167280683834 |
[1,2,6,18,46,115,301,792,2068,5380,14020,36581, 95413,248786,648714,1691686,4411530,11503991, 29998953,78228640,203998184,531969064,1387222648, 3617479225,9433351129,24599481138,64148406350, 167280683834] |