n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 15 |
3 | 37 |
4 | 89 |
5 | 215 |
6 | 519 |
7 | 1253 |
8 | 3025 |
9 | 7303 |
10 | 17631 |
11 | 42565 |
12 | 102761 |
13 | 248087 |
14 | 598935 |
15 | 1445957 |
16 | 3490849 |
17 | 8427655 |
18 | 20346159 |
19 | 49119973 |
20 | 118586105 |
21 | 286292183 |
22 | 691170471 |
23 | 1668633125 |
24 | 4028436721 |
25 | 9725506567 |
[1,7,15,37,89,215,519,1253,3025,7303,17631,42565, 102761,248087,598935,1445957,3490849,8427655, 20346159,49119973,118586105,286292183,691170471, 1668633125,4028436721,9725506567] |