n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 8 |
3 | 21 |
4 | 54 |
5 | 138 |
6 | 352 |
7 | 897 |
8 | 2285 |
9 | 5820 |
10 | 14823 |
11 | 37752 |
12 | 96148 |
13 | 244872 |
14 | 623645 |
15 | 1588311 |
16 | 4045140 |
17 | 10302237 |
18 | 26237926 |
19 | 66823230 |
20 | 170186624 |
21 | 433434405 |
22 | 1103878665 |
23 | 2811378360 |
24 | 7160069791 |
25 | 18235396608 |
26 | 46442241368 |
27 | 118279949136 |
28 | 301237536249 |
29 | 767197263003 |
[1,3,8,21,54,138,352,897,2285,5820,14823,37752, 96148,244872,623645,1588311,4045140,10302237, 26237926,66823230,170186624,433434405,1103878665, 2811378360,7160069791,18235396608,46442241368, 118279949136,301237536249,767197263003] |