n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 76 |
7 | 206 |
8 | 546 |
9 | 1406 |
10 | 3608 |
11 | 9259 |
12 | 23981 |
13 | 62324 |
14 | 162224 |
15 | 422028 |
16 | 1096900 |
17 | 2848240 |
18 | 7394076 |
19 | 19196044 |
20 | 49844356 |
21 | 129443736 |
22 | 336182997 |
23 | 873106045 |
24 | 2267493182 |
25 | 5888625652 |
26 | 15292437454 |
27 | 39713590230 |
28 | 103134439084 |
29 | 267836774530 |
30 | 695564961926 |
[1,1,2,4,10,26,76,206,546,1406,3608,9259,23981, 62324,162224,422028,1096900,2848240,7394076, 19196044,49844356,129443736,336182997,873106045, 2267493182,5888625652,15292437454,39713590230, 103134439084,267836774530,695564961926] |