Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 18 |
4 | 76 |
5 | 315 |
6 | 1296 |
7 | 5320 |
8 | 21800 |
9 | 89190 |
10 | 364460 |
11 | 1487948 |
12 | 6070332 |
13 | 24750570 |
14 | 100868236 |
15 | 410919990 |
16 | 1673486992 |
17 | 6813529348 |
18 | 27734769756 |
19 | 112874034844 |
20 | 459295593200 |
21 | 1868653768443 |
22 | 7601716598916 |
23 | 30920563717052 |
24 | 125759730486432 |
25 | 511445050400275 |
26 | 2079809585544808 |
27 | 8457048866652588 |
28 | 34386482811155244 |
[1,4,18,76,315,1296,5320,21800,89190,364460, 1487948,6070332,24750570,100868236,410919990, 1673486992,6813529348,27734769756,112874034844, 459295593200,1868653768443,7601716598916, 30920563717052,125759730486432,511445050400275, 2079809585544808,8457048866652588, 34386482811155244] |