n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 23 |
5 | 62 |
6 | 161 |
7 | 410 |
8 | 1031 |
9 | 2579 |
10 | 6359 |
11 | 15575 |
12 | 37830 |
13 | 91241 |
14 | 218581 |
15 | 520544 |
16 | 1232431 |
17 | 2902644 |
18 | 6802178 |
19 | 15866054 |
20 | 36844016 |
21 | 85202436 |
22 | 196251933 |
23 | 450341874 |
24 | 1029709478 |
25 | 2346409350 |
26 | 5329371142 |
27 | 12066816905 |
28 | 27240224766 |
29 | 61317231288 |
30 | 137643961196 |
[1,1,3,9,23,62,161,410,1031,2579,6359,15575,37830, 91241,218581,520544,1232431,2902644,6802178, 15866054,36844016,85202436,196251933,450341874, 1029709478,2346409350,5329371142,12066816905, 27240224766,61317231288,137643961196] |