n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 42 |
6 | 111 |
7 | 296 |
8 | 793 |
9 | 2130 |
10 | 5796 |
11 | 15788 |
12 | 43370 |
13 | 119711 |
14 | 332449 |
15 | 927748 |
16 | 2600623 |
17 | 7319908 |
18 | 20677806 |
19 | 58604898 |
20 | 166595953 |
21 | 474868192 |
22 | 1356904893 |
23 | 3885983995 |
24 | 11151740822 |
25 | 32062866197 |
26 | 92345080709 |
27 | 266390632933 |
[0,2,5,16,42,111,296,793,2130,5796,15788,43370, 119711,332449,927748,2600623,7319908,20677806, 58604898,166595953,474868192,1356904893, 3885983995,11151740822,32062866197,92345080709, 266390632933] |