n | a(n) |
---|---|
0 | 1 |
1 | 18 |
2 | 170 |
3 | 1122 |
4 | 5813 |
5 | 25176 |
6 | 94791 |
7 | 318630 |
8 | 974643 |
9 | 2752112 |
10 | 7253764 |
11 | 18003544 |
12 | 42378246 |
13 | 95162260 |
14 | 204856291 |
15 | 424515042 |
16 | 849825768 |
17 | 1648470894 |
18 | 3106669574 |
19 | 5701318526 |
20 | 10209535012 |
21 | 17871859722 |
22 | 30631153147 |
23 | 51476598044 |
24 | 84931517948 |
[1,18,170,1122,5813,25176,94791,318630,974643, 2752112,7253764,18003544,42378246,95162260, 204856291,424515042,849825768,1648470894, 3106669574,5701318526,10209535012,17871859722, 30631153147,51476598044,84931517948] |