n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 6 |
4 | 15 |
5 | 33 |
6 | 84 |
7 | 203 |
8 | 525 |
9 | 1330 |
10 | 3465 |
11 | 8955 |
12 | 23400 |
13 | 60957 |
14 | 159471 |
15 | 416702 |
16 | 1090635 |
17 | 2853229 |
18 | 7469052 |
19 | 19548759 |
20 | 51177225 |
21 | 133969386 |
22 | 350730933 |
23 | 918187991 |
24 | 2403833040 |
25 | 6293218393 |
26 | 16475822139 |
27 | 43134005238 |
[1,3,6,15,33,84,203,525,1330,3465,8955,23400, 60957,159471,416702,1090635,2853229,7469052, 19548759,51177225,133969386,350730933,918187991, 2403833040,6293218393,16475822139,43134005238] |