A381100 - cp's OEIS frontend

A381100 Number of integer triples i <= j <= k such that a non-degenerate triangle with sides (i, j, k) fits inside an equilateral triangle with sides (n, n, n), possibly touching its boundary from inside.

n	a(n)
1	1
2	2
3	5
4	10
5	18
6	29
7	44
8	62
9	82
10	109
11	141
12	180
13	226
14	279
15	339
16	403
17	475
18	557
19	651
20	755
21	870
22	993
23	1125
24	1269
25	1425
26	1595
27	1780
28	1976
29	2188
30	2417
31	2652
32	2905
33	3173
34	3461
35	3769
36	4090
37	4436
38	4788
39	5161
40	5558
41	5968
42	6405
43	6857
44	7340
45	7840
46	8355
47	8893
48	9463
49	10048

[1, 2, 5, 10, 18, 29, 44, 62, 82, 109, 141, 180, 226, 279, 339, 403, 475, 557, 651, 755, 870, 993, 1125, 1269, 1425, 1595, 1780, 1976, 2188, 2417, 2652, 2905, 3173, 3461, 3769, 4090, 4436, 4788, 5161, 5558, 5968, 6405, 6857, 7340, 7840, 8355, 8893, 9463, 10048]

cp's OEIS Frontend

A381100 Number of integer triples i <= j <= k such that a non-degenerate triangle with sides (i, j, k) fits inside an equilateral triangle with sides (n, n, n), possibly touching its boundary from inside.

Table of values

List of values