A333026 - cp's OEIS frontend

A333026 The number of vertices formed on an isosceles triangle by straight line segments mutually connecting all vertices and all points that divide the two equal length sides into n equal parts; the base of the triangle contains no points other than its vertices.

n	a(n)
1	3
2	6
3	16
4	45
5	111
6	230
7	448
8	769
9	1229
10	1858
11	2860
12	4007
13	5737
14	7724
15	10115
16	13074
17	17172
18	21454
19	27288
20	33332
21	40413
22	48944
23	59594
24	70213
25	82983
26	97608
27	113672
28	131032
29	152986
30	174088
31	201090
32	228295
33	258467
34	292726
35	328080
36	365633
37	412291
38	460834
39	512016

[3, 6, 16, 45, 111, 230, 448, 769, 1229, 1858, 2860, 4007, 5737, 7724, 10115, 13074, 17172, 21454, 27288, 33332, 40413, 48944, 59594, 70213, 82983, 97608, 113672, 131032, 152986, 174088, 201090, 228295, 258467, 292726, 328080, 365633, 412291, 460834, 512016]

cp's OEIS Frontend

A333026 The number of vertices formed on an isosceles triangle by straight line segments mutually connecting all vertices and all points that divide the two equal length sides into n equal parts; the base of the triangle contains no points other than its vertices.

Table of values

List of values