n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 14 |
4 | 48 |
5 | 166 |
6 | 613 |
7 | 2280 |
8 | 8976 |
9 | 35247 |
10 | 143382 |
11 | 582249 |
12 | 2431920 |
13 | 10125351 |
14 | 43070020 |
15 | 182684943 |
16 | 788474211 |
17 | 3393379082 |
18 | 14813919095 |
19 | 64502077124 |
20 | 284229195699 |
21 | 1249444788695 |
22 | 5548487320409 |
23 | 24585551900503 |
24 | 109894795683645 |
25 | 490239938536434 |
26 | 2203608385587727 |
27 | 9887231443885407 |
[1,2,5,14,48,166,613,2280,8976,35247,143382, 582249,2431920,10125351,43070020,182684943, 788474211,3393379082,14813919095,64502077124, 284229195699,1249444788695,5548487320409, 24585551900503,109894795683645,490239938536434, 2203608385587727,9887231443885407] |