n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 8 |
4 | 18 |
5 | 42 |
6 | 102 |
7 | 254 |
8 | 648 |
9 | 1688 |
10 | 4486 |
11 | 12146 |
12 | 33474 |
13 | 93810 |
14 | 267112 |
15 | 772124 |
16 | 2264214 |
17 | 6731254 |
18 | 20275118 |
19 | 61841886 |
20 | 190914356 |
21 | 596256556 |
22 | 1883148834 |
23 | 6012081046 |
24 | 19395355770 |
25 | 63205986042 |
26 | 208003526516 |
27 | 691048272152 |
28 | 2317140259834 |
29 | 7839542054210 |
[1,2,4,8,18,42,102,254,648,1688,4486,12146,33474, 93810,267112,772124,2264214,6731254,20275118, 61841886,190914356,596256556,1883148834, 6012081046,19395355770,63205986042,208003526516, 691048272152,2317140259834,7839542054210] |