A357008 - cp's OEIS frontend

A357008 Number of edges in an equilateral triangle when n internal equilateral triangles are drawn between the 3n points that divide each side into n+1 equal parts.

n	a(n)
0	3
1	9
2	27
3	57
4	99
5	135
6	219
7	297
8	351
9	489
10	603
11	645
12	867
13	1017
14	1107
15	1353
16	1539
17	1575
18	1947
19	2127
20	2295
21	2649
22	2907
23	3021
24	3459
25	3753
26	3855
27	4359
28	4707
29	4821
30	5403
31	5769
32	5967
33	6537
34	6897
35	6957
36	7779
37	8217
38	8451
39	9003
40	9603
41	9837
42	10587
43	11061
44	11211
45	12153
46	12699
47	12897
48	13827
49	14409
50	14715

[3, 9, 27, 57, 99, 135, 219, 297, 351, 489, 603, 645, 867, 1017, 1107, 1353, 1539, 1575, 1947, 2127, 2295, 2649, 2907, 3021, 3459, 3753, 3855, 4359, 4707, 4821, 5403, 5769, 5967, 6537, 6897, 6957, 7779, 8217, 8451, 9003, 9603, 9837, 10587, 11061, 11211, 12153, 12699, 12897, 13827, 14409, 14715]

cp's OEIS Frontend

A357008 Number of edges in an equilateral triangle when n internal equilateral triangles are drawn between the 3n points that divide each side into n+1 equal parts.

Table of values

List of values