n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 10 |
4 | 31 |
5 | 68 |
6 | 226 |
7 | 650 |
8 | 2259 |
9 | 7542 |
10 | 27036 |
11 | 96350 |
12 | 352786 |
13 | 1294652 |
14 | 4806366 |
15 | 17912120 |
16 | 67160083 |
17 | 252710672 |
18 | 954641186 |
19 | 3617076710 |
20 | 13744708060 |
21 | 52358745532 |
22 | 199914446106 |
23 | 764881848410 |
24 | 2932043941394 |
25 | 11259015845684 |
26 | 43303894193076 |
27 | 166800053312630 |
[2,6,10,31,68,226,650,2259,7542,27036,96350, 352786,1294652,4806366,17912120,67160083, 252710672,954641186,3617076710,13744708060, 52358745532,199914446106,764881848410, 2932043941394,11259015845684,43303894193076, 166800053312630] |