n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 17 |
4 | 83 |
5 | 381 |
6 | 1939 |
7 | 9905 |
8 | 52544 |
9 | 282315 |
10 | 1545130 |
11 | 8552557 |
12 | 47880020 |
13 | 270401515 |
14 | 1539288570 |
15 | 8821594865 |
16 | 50860072024 |
17 | 294774097800 |
18 | 1716506373521 |
19 | 10037592274363 |
20 | 58920231785426 |
21 | 347051995986538 |
22 | 2050627029532225 |
23 | 12151336260368205 |
[1,1,5,17,83,381,1939,9905,52544,282315,1545130, 8552557,47880020,270401515,1539288570,8821594865, 50860072024,294774097800,1716506373521, 10037592274363,58920231785426,347051995986538, 2050627029532225,12151336260368205] |