n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 8 |
4 | 20 |
5 | 37 |
6 | 86 |
7 | 173 |
8 | 372 |
9 | 788 |
10 | 1680 |
11 | 3550 |
12 | 7554 |
13 | 15994 |
14 | 33820 |
15 | 71374 |
16 | 150376 |
17 | 316151 |
18 | 663474 |
19 | 1389760 |
20 | 2906116 |
21 | 6066899 |
22 | 12645608 |
23 | 26318870 |
24 | 54700044 |
25 | 113536171 |
26 | 235363832 |
27 | 487342781 |
28 | 1007969620 |
29 | 2082597193 |
30 | 4298660754 |
31 | 8864505305 |
32 | 18263797648 |
33 | 37597869188 |
[1,4,8,20,37,86,173,372,788,1680,3550,7554,15994, 33820,71374,150376,316151,663474,1389760,2906116, 6066899,12645608,26318870,54700044,113536171, 235363832,487342781,1007969620,2082597193, 4298660754,8864505305,18263797648,37597869188] |