n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 34 |
4 | 140 |
5 | 571 |
6 | 2328 |
7 | 9496 |
8 | 38740 |
9 | 158045 |
10 | 644761 |
11 | 2630364 |
12 | 10730820 |
13 | 43777405 |
14 | 178594110 |
15 | 728591751 |
16 | 2972359720 |
17 | 12126025705 |
18 | 49469281395 |
19 | 201814663875 |
20 | 823322219501 |
21 | 3358821723401 |
22 | 13702634402876 |
23 | 55901207340276 |
24 | 228054320813276 |
25 | 930369409108152 |
[1,2,8,34,140,571,2328,9496,38740,158045,644761, 2630364,10730820,43777405,178594110,728591751, 2972359720,12126025705,49469281395,201814663875, 823322219501,3358821723401,13702634402876, 55901207340276,228054320813276,930369409108152] |