Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 6 |
5 | 30 |
6 | 72 |
7 | 336 |
8 | 720 |
9 | 4864 |
10 | 9900 |
11 | 54498 |
12 | 139968 |
13 | 728208 |
14 | 1820448 |
15 | 11748240 |
16 | 23224320 |
17 | 142888536 |
18 | 424189440 |
19 | 2066689584 |
20 | 4704480000 |
21 | 34426570752 |
22 | 75016279008 |
23 | 437072997306 |
24 | 1171108896768 |
25 | 6391042560000 |
26 | 16287748233120 |
27 | 111155542830144 |
28 | 225354102607872 |
29 | 1419514150386528 |
30 | 3983428743840000 |
31 | 21252009311404938 |
32 | 49614674429214720 |
[1,1,4,6,30,72,336,720,4864,9900,54498,139968, 728208,1820448,11748240,23224320,142888536, 424189440,2066689584,4704480000,34426570752, 75016279008,437072997306,1171108896768, 6391042560000,16287748233120,111155542830144, 225354102607872,1419514150386528,3983428743840000, 21252009311404938,49614674429214720] |