n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 8 |
4 | 31 |
5 | 83 |
6 | 309 |
7 | 977 |
8 | 3571 |
9 | 12395 |
10 | 45458 |
11 | 165876 |
12 | 617495 |
13 | 2316191 |
14 | 8773838 |
15 | 33493548 |
16 | 128840353 |
17 | 498456315 |
18 | 1941252054 |
19 | 7594394344 |
20 | 29871433149 |
21 | 117966578225 |
22 | 467857554197 |
23 | 1862361268887 |
24 | 7438937047067 |
25 | 29811320860773 |
26 | 119819502795074 |
27 | 482960010597006 |
28 | 1951744104721491 |
[1,1,4,8,31,83,309,977,3571,12395,45458,165876, 617495,2316191,8773838,33493548,128840353, 498456315,1941252054,7594394344,29871433149, 117966578225,467857554197,1862361268887, 7438937047067,29811320860773,119819502795074, 482960010597006,1951744104721491] |