n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 22 |
3 | 76 |
4 | 260 |
5 | 888 |
6 | 3032 |
7 | 10352 |
8 | 35344 |
9 | 120672 |
10 | 412000 |
11 | 1406656 |
12 | 4802624 |
13 | 16397184 |
14 | 55983488 |
15 | 191139584 |
16 | 652591360 |
17 | 2228086272 |
18 | 7607162368 |
19 | 25972476928 |
20 | 88675582976 |
21 | 302757378048 |
22 | 1033678346240 |
23 | 3529198628864 |
24 | 12049437822976 |
25 | 41139354034176 |
26 | 140458540490752 |
[1,6,22,76,260,888,3032,10352,35344,120672,412000, 1406656,4802624,16397184,55983488,191139584, 652591360,2228086272,7607162368,25972476928, 88675582976,302757378048,1033678346240, 3529198628864,12049437822976,41139354034176, 140458540490752] |