n | a(n) |
---|---|
3 | 1 |
4 | 1 |
5 | 2 |
6 | 5 |
7 | 20 |
8 | 42 |
9 | 238 |
10 | 511 |
11 | 3311 |
12 | 7423 |
13 | 52273 |
14 | 119739 |
15 | 894950 |
16 | 2087761 |
17 | 16317275 |
18 | 38616848 |
19 | 312598141 |
20 | 748492526 |
21 | 6233339701 |
22 | 15070028915 |
23 | 128475055100 |
24 | 313137867019 |
25 | 2722580871465 |
26 | 6681890398543 |
27 | 59076953846060 |
28 | 145856049509351 |
29 | 1308316471338448 |
[1,1,2,5,20,42,238,511,3311,7423,52273,119739, 894950,2087761,16317275,38616848,312598141, 748492526,6233339701,15070028915,128475055100, 313137867019,2722580871465,6681890398543, 59076953846060,145856049509351,1308316471338448] |