n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 11 |
3 | 38 |
4 | 109 |
5 | 284 |
6 | 699 |
7 | 1658 |
8 | 3833 |
9 | 8696 |
10 | 19447 |
11 | 42998 |
12 | 94197 |
13 | 204788 |
14 | 442355 |
15 | 950258 |
16 | 2031601 |
17 | 4325360 |
18 | 9175023 |
19 | 19398638 |
20 | 40894445 |
21 | 85983212 |
22 | 180355051 |
23 | 377487338 |
24 | 788529129 |
25 | 1644167144 |
26 | 3422552039 |
27 | 7113539558 |
28 | 14763950053 |
[0,2,11,38,109,284,699,1658,3833,8696,19447,42998, 94197,204788,442355,950258,2031601,4325360, 9175023,19398638,40894445,85983212,180355051, 377487338,788529129,1644167144,3422552039, 7113539558,14763950053] |