A195148 - cp's OEIS frontend

A195148 Concentric 20-gonal numbers.

n	a(n)
0	0
1	1
2	20
3	41
4	80
5	121
6	180
7	241
8	320
9	401
10	500
11	601
12	720
13	841
14	980
15	1121
16	1280
17	1441
18	1620
19	1801
20	2000
21	2201
22	2420
23	2641
24	2880
25	3121
26	3380
27	3641
28	3920
29	4201
30	4500
31	4801
32	5120
33	5441
34	5780
35	6121
36	6480
37	6841
38	7220
39	7601
40	8000
41	8401
42	8820
43	9241
44	9680
45	10121

[0, 1, 20, 41, 80, 121, 180, 241, 320, 401, 500, 601, 720, 841, 980, 1121, 1280, 1441, 1620, 1801, 2000, 2201, 2420, 2641, 2880, 3121, 3380, 3641, 3920, 4201, 4500, 4801, 5120, 5441, 5780, 6121, 6480, 6841, 7220, 7601, 8000, 8401, 8820, 9241, 9680, 10121]

cp's OEIS Frontend

A195148 Concentric 20-gonal numbers.

Table of values

List of values