n | a(n) |
---|---|
0 | 3 |
1 | 7 |
2 | 18 |
3 | 45 |
4 | 108 |
5 | 258 |
6 | 615 |
7 | 1459 |
8 | 3453 |
9 | 8164 |
10 | 19287 |
11 | 45540 |
12 | 107496 |
13 | 253695 |
14 | 598659 |
15 | 1412587 |
16 | 3332970 |
17 | 7863853 |
18 | 18553752 |
19 | 43774722 |
20 | 103279023 |
21 | 243668295 |
22 | 574890057 |
23 | 1356344056 |
24 | 3200033343 |
25 | 7549859464 |
26 | 17812425600 |
27 | 42024945087 |
28 | 99149648967 |
29 | 233924207559 |
[3,7,18,45,108,258,615,1459,3453,8164,19287,45540, 107496,253695,598659,1412587,3332970,7863853, 18553752,43774722,103279023,243668295,574890057, 1356344056,3200033343,7549859464,17812425600, 42024945087,99149648967,233924207559] |