n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 77 |
7 | 236 |
8 | 741 |
9 | 2430 |
10 | 8179 |
11 | 28208 |
12 | 99475 |
13 | 356501 |
14 | 1296199 |
15 | 4783652 |
16 | 17871126 |
17 | 67465415 |
18 | 257298969 |
19 | 989810000 |
20 | 3838658082 |
21 | 15001356476 |
22 | 59013879343 |
23 | 233616780902 |
24 | 930237304959 |
25 | 3723778727143 |
26 | 14981506373914 |
27 | 60554119697080 |
28 | 245812410995518 |
29 | 1001928721763590 |
30 | 4099422669401518 |
[1,1,2,4,10,26,77,236,741,2430,8179,28208,99475, 356501,1296199,4783652,17871126,67465415, 257298969,989810000,3838658082,15001356476, 59013879343,233616780902,930237304959, 3723778727143,14981506373914,60554119697080, 245812410995518,1001928721763590,4099422669401518] |