n | a(n) |
---|---|
0 | 20 |
1 | 50 |
2 | 110 |
3 | 230 |
4 | 470 |
5 | 950 |
6 | 1910 |
7 | 3830 |
8 | 7670 |
9 | 15350 |
10 | 30710 |
11 | 61430 |
12 | 122870 |
13 | 245750 |
14 | 491510 |
15 | 983030 |
16 | 1966070 |
17 | 3932150 |
18 | 7864310 |
19 | 15728630 |
20 | 31457270 |
21 | 62914550 |
22 | 125829110 |
23 | 251658230 |
24 | 503316470 |
25 | 1006632950 |
26 | 2013265910 |
27 | 4026531830 |
28 | 8053063670 |
29 | 16106127350 |
[20,50,110,230,470,950,1910,3830,7670,15350,30710, 61430,122870,245750,491510,983030,1966070,3932150, 7864310,15728630,31457270,62914550,125829110, 251658230,503316470,1006632950,2013265910, 4026531830,8053063670,16106127350] |