A060202 - cp's OEIS frontend

A060202 Let G = complete graph on 4 vertices, create the sequence G, L(G), L(L(G)), L(L(L(G))), ... where each graph in this sequence is the line graph of the previous graph; a(n) is number of vertices of the n-th graph in this sequence.

n	a(n)
0	4
1	6
2	12
3	36
4	180
5	1620
6	27540
7	908820
8	59073300
9	7620455700
10	1958457114900
11	1004688499943700
12	1029805712442292500
13	2110071904794257332500
14	8644964593942072291252500
15	70828194918167398282231732500

[4, 6, 12, 36, 180, 1620, 27540, 908820, 59073300, 7620455700, 1958457114900, 1004688499943700, 1029805712442292500, 2110071904794257332500, 8644964593942072291252500, 70828194918167398282231732500]

cp's OEIS Frontend

A060202 Let G = complete graph on 4 vertices, create the sequence G, L(G), L(L(G)), L(L(L(G))), ... where each graph in this sequence is the line graph of the previous graph; a(n) is number of vertices of the n-th graph in this sequence.

Table of values

List of values