n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 76 |
7 | 232 |
8 | 764 |
9 | 2620 |
10 | 9496 |
11 | 35696 |
12 | 140151 |
13 | 568491 |
14 | 2390311 |
15 | 10347911 |
16 | 46191551 |
17 | 211671999 |
18 | 996269310 |
19 | 4801547628 |
20 | 23695885170 |
21 | 119481280210 |
22 | 615372604033 |
23 | 3232009497979 |
24 | 17302866542177 |
25 | 94301143232321 |
26 | 522945331559246 |
27 | 2947729723188352 |
[1,1,2,4,10,26,76,232,764,2620,9496,35696,140151, 568491,2390311,10347911,46191551,211671999, 996269310,4801547628,23695885170,119481280210, 615372604033,3232009497979,17302866542177, 94301143232321,522945331559246,2947729723188352] |