n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 2 |
6 | 5 |
7 | 16 |
8 | 68 |
9 | 244 |
10 | 1106 |
11 | 4041 |
12 | 15802 |
13 | 60716 |
14 | 234319 |
15 | 885466 |
16 | 3369738 |
17 | 12612488 |
18 | 47251424 |
19 | 174691216 |
20 | 644760884 |
21 | 2353213266 |
22 | 8557977690 |
23 | 30825999521 |
24 | 110546795278 |
25 | 393117952349 |
26 | 1390864413489 |
27 | 4884724958228 |
28 | 17059662985333 |
[1,1,1,2,2,5,16,68,244,1106,4041,15802,60716, 234319,885466,3369738,12612488,47251424,174691216, 644760884,2353213266,8557977690,30825999521, 110546795278,393117952349,1390864413489, 4884724958228,17059662985333] |