n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 11 |
4 | 28 |
5 | 68 |
6 | 169 |
7 | 422 |
8 | 1048 |
9 | 2603 |
10 | 6472 |
11 | 16088 |
12 | 39985 |
13 | 99386 |
14 | 247036 |
15 | 614027 |
16 | 1526212 |
17 | 3793532 |
18 | 9429145 |
19 | 23436926 |
20 | 58254448 |
21 | 144796331 |
22 | 359903440 |
23 | 894570224 |
24 | 2223529441 |
25 | 5526769202 |
26 | 13737249076 |
27 | 34145086475 |
28 | 84870480556 |
[1,2,4,11,28,68,169,422,1048,2603,6472,16088, 39985,99386,247036,614027,1526212,3793532,9429145, 23436926,58254448,144796331,359903440,894570224, 2223529441,5526769202,13737249076,34145086475, 84870480556] |