n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 28 |
4 | 119 |
5 | 541 |
6 | 2327 |
7 | 10384 |
8 | 47491 |
9 | 208616 |
10 | 938105 |
11 | 4229023 |
12 | 18855226 |
13 | 84609455 |
14 | 379973132 |
15 | 1700940358 |
16 | 7627893865 |
17 | 34215621269 |
18 | 153337948168 |
19 | 687522535009 |
20 | 3082887354405 |
21 | 13820286385598 |
22 | 61963243406462 |
23 | 277818915171978 |
[1,7,28,119,541,2327,10384,47491,208616,938105, 4229023,18855226,84609455,379973132,1700940358, 7627893865,34215621269,153337948168,687522535009, 3082887354405,13820286385598,61963243406462, 277818915171978] |