n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 5 |
5 | 18 |
6 | 56 |
7 | 160 |
8 | 432 |
9 | 1121 |
10 | 2827 |
11 | 6988 |
12 | 17052 |
13 | 41334 |
14 | 100082 |
15 | 243205 |
16 | 595313 |
17 | 1471278 |
18 | 3674756 |
19 | 9272410 |
20 | 23605202 |
21 | 60513201 |
22 | 155893167 |
23 | 402819550 |
24 | 1042358942 |
25 | 2697994240 |
26 | 6979913196 |
27 | 18041181065 |
28 | 46583002021 |
29 | 120161923640 |
30 | 309719942306 |
[0,0,0,1,5,18,56,160,432,1121,2827,6988,17052, 41334,100082,243205,595313,1471278,3674756, 9272410,23605202,60513201,155893167,402819550, 1042358942,2697994240,6979913196,18041181065, 46583002021,120161923640,309719942306] |