A137246 - cp's OEIS frontend

A137246 a(n) is the ratio of the sum of the squares of the bends (curvatures) of the n-th generation of an Apollonian packing to the sum of the squares of the bends of the initial four-circle configuration.

n	a(n)
1	1
2	17
3	339
4	6729
5	133563
6	2651073
7	52620771
8	1044462201
9	20731381707
10	411494247537
11	8167690805619
12	162119333369769
13	3217883594978523
14	63871313899461153
15	1267772627204287491
16	25163838602387366361
17	499473454166134464747
18	9913977567515527195857

[1, 17, 339, 6729, 133563, 2651073, 52620771, 1044462201, 20731381707, 411494247537, 8167690805619, 162119333369769, 3217883594978523, 63871313899461153, 1267772627204287491, 25163838602387366361, 499473454166134464747, 9913977567515527195857]

cp's OEIS Frontend

A137246 a(n) is the ratio of the sum of the squares of the bends (curvatures) of the n-th generation of an Apollonian packing to the sum of the squares of the bends of the initial four-circle configuration.

Table of values

List of values