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 | 140152 |
13 | 568504 |
14 | 2390480 |
15 | 10349536 |
16 | 46206736 |
17 | 211799312 |
18 | 997313824 |
19 | 4809701440 |
20 | 23758664096 |
21 | 119952692896 |
22 | 618884638912 |
23 | 3257843882624 |
24 | 17492190577600 |
25 | 95680443760576 |
26 | 532985208200576 |
27 | 3020676745975552 |
[1,1,2,4,10,26,76,232,764,2620,9496,35696,140152, 568504,2390480,10349536,46206736,211799312, 997313824,4809701440,23758664096,119952692896, 618884638912,3257843882624,17492190577600, 95680443760576,532985208200576,3020676745975552] |