n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | 2 |
4 | 7 |
5 | 14 |
6 | 37 |
7 | 90 |
8 | 233 |
9 | 602 |
10 | 1586 |
11 | 4212 |
12 | 11299 |
13 | 30536 |
14 | 83098 |
15 | 227474 |
16 | 625993 |
17 | 1730786 |
18 | 4805596 |
19 | 13393688 |
20 | 37458331 |
21 | 105089228 |
22 | 295673995 |
23 | 834086420 |
24 | 2358641377 |
25 | 6684761124 |
26 | 18985057352 |
27 | 54022715450 |
28 | 154000562759 |
29 | 439742222070 |
30 | 1257643249141 |
[1,0,2,2,7,14,37,90,233,602,1586,4212,11299,30536, 83098,227474,625993,1730786,4805596,13393688, 37458331,105089228,295673995,834086420,2358641377, 6684761124,18985057352,54022715450,154000562759, 439742222070,1257643249141] |