n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 22 |
5 | 69 |
6 | 232 |
7 | 812 |
8 | 2933 |
9 | 10868 |
10 | 41176 |
11 | 158896 |
12 | 622615 |
13 | 2473326 |
14 | 9941501 |
15 | 40377341 |
16 | 165508498 |
17 | 684061812 |
18 | 2848337029 |
19 | 11939734114 |
20 | 50355254586 |
21 | 213555500201 |
22 | 910306132464 |
23 | 3898496289411 |
24 | 16768128275099 |
25 | 72411805333357 |
26 | 313867404311122 |
27 | 1365162015516800 |
28 | 5956939958207184 |
[1,1,3,7,22,69,232,812,2933,10868,41176,158896, 622615,2473326,9941501,40377341,165508498, 684061812,2848337029,11939734114,50355254586, 213555500201,910306132464,3898496289411, 16768128275099,72411805333357,313867404311122, 1365162015516800,5956939958207184] |