n | a(n) |
---|---|
2 | 1 |
3 | 7 |
4 | 28 |
5 | 86 |
6 | 227 |
7 | 545 |
8 | 1230 |
9 | 2664 |
10 | 5613 |
11 | 11611 |
12 | 23728 |
13 | 48106 |
14 | 97031 |
15 | 195077 |
16 | 391394 |
17 | 784284 |
18 | 1570353 |
19 | 3142815 |
20 | 6288100 |
21 | 12579070 |
22 | 25161451 |
23 | 50326697 |
24 | 100657718 |
25 | 201320336 |
26 | 402646197 |
27 | 805298595 |
[1,7,28,86,227,545,1230,2664,5613,11611,23728, 48106,97031,195077,391394,784284,1570353,3142815, 6288100,12579070,25161451,50326697,100657718, 201320336,402646197,805298595] |