n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 10 |
3 | 38 |
4 | 130 |
5 | 422 |
6 | 1330 |
7 | 4118 |
8 | 12610 |
9 | 38342 |
10 | 116050 |
11 | 350198 |
12 | 1054690 |
13 | 3172262 |
14 | 9533170 |
15 | 28632278 |
16 | 85962370 |
17 | 258018182 |
18 | 774316690 |
19 | 2323474358 |
20 | 6971471650 |
21 | 20916512102 |
22 | 62753730610 |
23 | 188269580438 |
24 | 564825518530 |
25 | 1694510110022 |
26 | 5083597438930 |
27 | 15250926534518 |
28 | 45753048039010 |
[0,2,10,38,130,422,1330,4118,12610,38342,116050, 350198,1054690,3172262,9533170,28632278,85962370, 258018182,774316690,2323474358,6971471650, 20916512102,62753730610,188269580438,564825518530, 1694510110022,5083597438930,15250926534518, 45753048039010] |