n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 8 |
4 | 21 |
5 | 53 |
6 | 132 |
7 | 323 |
8 | 783 |
9 | 1880 |
10 | 4485 |
11 | 10637 |
12 | 25116 |
13 | 59075 |
14 | 138519 |
15 | 323936 |
16 | 755877 |
17 | 1760453 |
18 | 4093620 |
19 | 9506051 |
20 | 22049055 |
21 | 51091496 |
22 | 118287237 |
23 | 273658877 |
24 | 632714892 |
25 | 1462080131 |
26 | 3377002023 |
27 | 7796796848 |
28 | 17994911781 |
29 | 41519520053 |
[1,3,8,21,53,132,323,783,1880,4485,10637,25116, 59075,138519,323936,755877,1760453,4093620, 9506051,22049055,51091496,118287237,273658877, 632714892,1462080131,3377002023,7796796848, 17994911781,41519520053] |