n | a(n) |
---|---|
3 | 1 |
4 | 3 |
5 | 16 |
6 | 62 |
7 | 275 |
8 | 1121 |
9 | 4584 |
10 | 18012 |
11 | 69573 |
12 | 262495 |
13 | 974704 |
14 | 3562714 |
15 | 12859127 |
16 | 45881213 |
17 | 162093320 |
18 | 567579192 |
19 | 1971791241 |
20 | 6801382203 |
21 | 23309839120 |
22 | 79421200630 |
23 | 269160513115 |
24 | 907726206233 |
25 | 3047449980392 |
26 | 10188384020372 |
27 | 33930772031565 |
28 | 112595241877911 |
29 | 372383348102640 |
30 | 1227721195083922 |
[1,3,16,62,275,1121,4584,18012,69573,262495, 974704,3562714,12859127,45881213,162093320, 567579192,1971791241,6801382203,23309839120, 79421200630,269160513115,907726206233, 3047449980392,10188384020372,33930772031565, 112595241877911,372383348102640,1227721195083922] |