n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | 7 |
4 | 14 |
5 | 31 |
6 | 84 |
7 | 195 |
8 | 482 |
9 | 1131 |
10 | 2620 |
11 | 5957 |
12 | 13502 |
13 | 29911 |
14 | 65820 |
15 | 143551 |
16 | 311074 |
17 | 669543 |
18 | 1435388 |
19 | 3061571 |
20 | 6503526 |
21 | 13771989 |
22 | 29061728 |
23 | 61159219 |
24 | 128372210 |
25 | 268845359 |
26 | 561835492 |
27 | 1171862289 |
28 | 2440014306 |
29 | 5072185867 |
30 | 10528184756 |
[2,4,7,14,31,84,195,482,1131,2620,5957,13502, 29911,65820,143551,311074,669543,1435388,3061571, 6503526,13771989,29061728,61159219,128372210, 268845359,561835492,1171862289,2440014306, 5072185867,10528184756] |