n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 12 |
3 | 46 |
4 | 175 |
5 | 610 |
6 | 2107 |
7 | 6918 |
8 | 22256 |
9 | 69498 |
10 | 212649 |
11 | 636910 |
12 | 1874470 |
13 | 5423332 |
14 | 15457223 |
15 | 43433088 |
16 | 120467606 |
17 | 330077358 |
18 | 894193347 |
19 | 2396636236 |
20 | 6359325300 |
21 | 16714566278 |
22 | 43539016461 |
23 | 112449776138 |
24 | 288083439729 |
25 | 732356943548 |
26 | 1848098069644 |
27 | 4630892393996 |
[1,2,12,46,175,610,2107,6918,22256,69498,212649, 636910,1874470,5423332,15457223,43433088, 120467606,330077358,894193347,2396636236, 6359325300,16714566278,43539016461,112449776138, 288083439729,732356943548,1848098069644, 4630892393996] |