n | a(n) |
---|---|
2 | 1 |
3 | 3 |
4 | 8 |
5 | 21 |
6 | 57 |
7 | 162 |
8 | 479 |
9 | 1458 |
10 | 4528 |
11 | 14259 |
12 | 45349 |
13 | 145289 |
14 | 468121 |
15 | 1515128 |
16 | 4922145 |
17 | 16040310 |
18 | 52411294 |
19 | 171646085 |
20 | 563266323 |
21 | 1851661113 |
22 | 6096654978 |
23 | 20101681834 |
24 | 66362538332 |
25 | 219336702948 |
26 | 725692113292 |
27 | 2403295565913 |
28 | 7966021263923 |
29 | 26425616887971 |
[1,3,8,21,57,162,479,1458,4528,14259,45349,145289, 468121,1515128,4922145,16040310,52411294, 171646085,563266323,1851661113,6096654978, 20101681834,66362538332,219336702948,725692113292, 2403295565913,7966021263923,26425616887971] |