n | a(n) |
---|---|
2 | 1 |
3 | 1 |
4 | 3 |
5 | 7 |
6 | 17 |
7 | 42 |
8 | 105 |
9 | 267 |
10 | 684 |
11 | 1775 |
12 | 4639 |
13 | 12238 |
14 | 32491 |
15 | 86859 |
16 | 233496 |
17 | 631082 |
18 | 1713613 |
19 | 4673455 |
20 | 12795426 |
21 | 35159212 |
22 | 96927479 |
23 | 268021520 |
24 | 743188706 |
25 | 2066071045 |
26 | 5757360011 |
27 | 16079027344 |
28 | 44997313684 |
29 | 126166307275 |
30 | 354384737204 |
31 | 997083779801 |
32 | 2809751278062 |
[1,1,3,7,17,42,105,267,684,1775,4639,12238,32491, 86859,233496,631082,1713613,4673455,12795426, 35159212,96927479,268021520,743188706,2066071045, 5757360011,16079027344,44997313684,126166307275, 354384737204,997083779801,2809751278062] |