n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 14 |
6 | 40 |
7 | 114 |
8 | 322 |
9 | 900 |
10 | 2490 |
11 | 6826 |
12 | 18564 |
13 | 50146 |
14 | 134690 |
15 | 360068 |
16 | 958826 |
17 | 2545082 |
18 | 6737860 |
19 | 17799570 |
20 | 46939378 |
21 | 123608388 |
22 | 325130970 |
23 | 854405962 |
24 | 2243591940 |
25 | 5887904194 |
26 | 15444237890 |
27 | 40495141124 |
28 | 106146043082 |
29 | 278161091930 |
30 | 728790217540 |
31 | 1909149084786 |
32 | 5000603193874 |
33 | 13096687028676 |
34 | 34297779391290 |
[0,0,1,2,5,14,40,114,322,900,2490,6826,18564, 50146,134690,360068,958826,2545082,6737860, 17799570,46939378,123608388,325130970,854405962, 2243591940,5887904194,15444237890,40495141124, 106146043082,278161091930,728790217540, 1909149084786,5000603193874,13096687028676, 34297779391290] |