n | a(n) |
---|---|
0 | 2 |
1 | 10 |
2 | 53 |
3 | 298 |
4 | 1727 |
5 | 10207 |
6 | 61154 |
7 | 370090 |
8 | 2256983 |
9 | 13848085 |
10 | 85387040 |
11 | 528646015 |
12 | 3284180720 |
13 | 20462505850 |
14 | 127816245053 |
15 | 800143927210 |
16 | 5018683475087 |
17 | 31532297088781 |
18 | 198419993271440 |
19 | 1250291989478773 |
20 | 7888160383113014 |
[2,10,53,298,1727,10207,61154,370090,2256983, 13848085,85387040,528646015,3284180720, 20462505850,127816245053,800143927210, 5018683475087,31532297088781,198419993271440, 1250291989478773,7888160383113014] |