A326210 - cp's OEIS frontend

A326210 Number of labeled simple graphs with vertices {1..n} containing a nesting pair of edges, where two edges {a,b}, {c,d} are nesting if a < c and b > d or a > c and b < d.

n	a(n)
0	0
1	0
2	0
3	0
4	16
5	672
6	29888
7	2071936
8	268204288
9	68717285888
10	35184350796800
11	36028796807919616
12	73786976292712960000
13	302231454903635611721728
14	2475880078570760326175178752
15	40564819207303340845566684397568
16	1329227995784915872903782635437883392

[0, 0, 0, 0, 16, 672, 29888, 2071936, 268204288, 68717285888, 35184350796800, 36028796807919616, 73786976292712960000, 302231454903635611721728, 2475880078570760326175178752, 40564819207303340845566684397568, 1329227995784915872903782635437883392]

cp's OEIS Frontend

A326210 Number of labeled simple graphs with vertices {1..n} containing a nesting pair of edges, where two edges {a,b}, {c,d} are nesting if a < c and b > d or a > c and b < d.

Table of values

List of values