n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 76 |
7 | 232 |
8 | 764 |
9 | 2620 |
10 | 9496 |
11 | 35696 |
12 | 130656 |
13 | 464036 |
14 | 1615276 |
15 | 5517828 |
16 | 18628384 |
17 | 62330046 |
18 | 207657610 |
19 | 690610926 |
20 | 2299356168 |
21 | 7678084407 |
22 | 25759043565 |
23 | 86697055428 |
24 | 292427968880 |
25 | 987581324508 |
26 | 3337168641756 |
27 | 11277361448224 |
28 | 38099089805120 |
[1,1,2,4,10,26,76,232,764,2620,9496,35696,130656, 464036,1615276,5517828,18628384,62330046, 207657610,690610926,2299356168,7678084407, 25759043565,86697055428,292427968880,987581324508, 3337168641756,11277361448224,38099089805120] |