n | a(n) |
---|---|
0 | -1 |
1 | 2 |
2 | 3 |
3 | 3 |
4 | 5 |
5 | 14 |
6 | 23 |
7 | 42 |
8 | 81 |
9 | 155 |
10 | 287 |
11 | 542 |
12 | 1023 |
13 | 1926 |
14 | 3623 |
15 | 6827 |
16 | 12857 |
17 | 24210 |
18 | 45591 |
19 | 85862 |
20 | 161693 |
21 | 304499 |
22 | 573435 |
23 | 1079898 |
24 | 2033663 |
25 | 3829802 |
26 | 7212299 |
27 | 13582227 |
28 | 25578093 |
29 | 48168758 |
30 | 90711575 |
31 | 170828354 |
[-1,2,3,3,5,14,23,42,81,155,287,542,1023,1926, 3623,6827,12857,24210,45591,85862,161693,304499, 573435,1079898,2033663,3829802,7212299,13582227, 25578093,48168758,90711575,170828354] |