n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 24 |
4 | 70 |
5 | 198 |
6 | 532 |
7 | 1370 |
8 | 3418 |
9 | 8296 |
10 | 19677 |
11 | 45770 |
12 | 104687 |
13 | 235972 |
14 | 525136 |
15 | 1155516 |
16 | 2517199 |
17 | 5434454 |
18 | 11638099 |
19 | 24741812 |
20 | 52250956 |
21 | 109678746 |
22 | 228948036 |
23 | 475479494 |
24 | 982831024 |
25 | 2022696684 |
26 | 4145947065 |
27 | 8466032502 |
28 | 17226979885 |
29 | 34939008232 |
30 | 70643799296 |
31 | 142423352600 |
[1,2,7,24,70,198,532,1370,3418,8296,19677,45770, 104687,235972,525136,1155516,2517199,5434454, 11638099,24741812,52250956,109678746,228948036, 475479494,982831024,2022696684,4145947065, 8466032502,17226979885,34939008232,70643799296, 142423352600] |