A045821 - cp's OEIS frontend

A045821 Numerical distance between m-th and (n+m)-th circles in a loxodromic sequence of circles in which each 4 consecutive circles touch.

n	a(n)
0	-1
1	1
2	1
3	1
4	7
5	17
6	49
7	145
8	415
9	1201
10	3473
11	10033
12	28999
13	83809
14	242209
15	700001
16	2023039
17	5846689
18	16897249
19	48833953
20	141132743
21	407881201
22	1178798545
23	3406791025
24	9845808799
25	28454915537
26	82236232177
27	237667122001

[-1, 1, 1, 1, 7, 17, 49, 145, 415, 1201, 3473, 10033, 28999, 83809, 242209, 700001, 2023039, 5846689, 16897249, 48833953, 141132743, 407881201, 1178798545, 3406791025, 9845808799, 28454915537, 82236232177, 237667122001]

cp's OEIS Frontend

A045821 Numerical distance between m-th and (n+m)-th circles in a loxodromic sequence of circles in which each 4 consecutive circles touch.

Table of values

List of values