n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 73 |
6 | 244 |
7 | 786 |
8 | 2458 |
9 | 7510 |
10 | 22527 |
11 | 66579 |
12 | 194408 |
13 | 561988 |
14 | 1610900 |
15 | 4584426 |
16 | 12966225 |
17 | 36476173 |
18 | 102132412 |
19 | 284785878 |
20 | 791182318 |
21 | 2190833086 |
22 | 6048706947 |
23 | 16655647911 |
24 | 45752451536 |
25 | 125405039368 |
26 | 343040546984 |
27 | 936651104466 |
28 | 2553146783253 |
29 | 6948573570145 |
[1,2,6,21,73,244,786,2458,7510,22527,66579,194408, 561988,1610900,4584426,12966225,36476173, 102132412,284785878,791182318,2190833086, 6048706947,16655647911,45752451536,125405039368, 343040546984,936651104466,2553146783253, 6948573570145] |