n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 22 |
6 | 67 |
7 | 225 |
8 | 765 |
9 | 2704 |
10 | 9710 |
11 | 35558 |
12 | 131859 |
13 | 494892 |
14 | 1874901 |
15 | 7162807 |
16 | 27558511 |
17 | 106695148 |
18 | 415346144 |
19 | 1624780952 |
20 | 6383671910 |
21 | 25179642120 |
22 | 99670897534 |
23 | 395810459602 |
24 | 1576464630375 |
25 | 6295827843098 |
[0,1,1,3,7,22,67,225,765,2704,9710,35558,131859, 494892,1874901,7162807,27558511,106695148, 415346144,1624780952,6383671910,25179642120, 99670897534,395810459602,1576464630375, 6295827843098] |