n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 9 |
4 | 21 |
5 | 49 |
6 | 114 |
7 | 265 |
8 | 616 |
9 | 1432 |
10 | 3329 |
11 | 7739 |
12 | 17991 |
13 | 41824 |
14 | 97229 |
15 | 226030 |
16 | 525456 |
17 | 1221537 |
18 | 2839729 |
19 | 6601569 |
20 | 15346786 |
21 | 35676949 |
22 | 82938844 |
23 | 192809420 |
24 | 448227521 |
25 | 1042002567 |
26 | 2422362079 |
27 | 5631308624 |
28 | 13091204281 |
29 | 30433357674 |
30 | 70748973084 |
31 | 164471408185 |
[1,2,4,9,21,49,114,265,616,1432,3329,7739,17991, 41824,97229,226030,525456,1221537,2839729,6601569, 15346786,35676949,82938844,192809420,448227521, 1042002567,2422362079,5631308624,13091204281, 30433357674,70748973084,164471408185] |