n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 28 |
6 | 84 |
7 | 260 |
8 | 818 |
9 | 2609 |
10 | 8434 |
11 | 27622 |
12 | 91524 |
13 | 306270 |
14 | 1033364 |
15 | 3510960 |
16 | 12000898 |
17 | 41239249 |
18 | 142387668 |
19 | 493732424 |
20 | 1718653462 |
21 | 6003501630 |
22 | 21037928794 |
23 | 73937288814 |
24 | 260544327156 |
25 | 920376228329 |
26 | 3258619058158 |
27 | 11561493797242 |
28 | 41100002807572 |
[1,1,2,4,10,28,84,260,818,2609,8434,27622,91524, 306270,1033364,3510960,12000898,41239249, 142387668,493732424,1718653462,6003501630, 21037928794,73937288814,260544327156,920376228329, 3258619058158,11561493797242,41100002807572] |