A331251 - cp's OEIS frontend

A331251 Triangles with integer sides i <= j <= k sorted by area, and, in case of ties, lexicographically by side lengths (smallest first). The sequence gives shortest side i. The other sides are in A331252 and A331253.

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	2
10	1
11	1
12	2
13	2
14	3
15	1
16	3
17	3
18	1
19	2
20	2
21	1
22	3
23	1
24	2
25	3
26	2
27	1
28	3
29	2
30	1
31	3
32	4
33	2
34	4
35	1
36	3
37	2
38	3
39	1
40	3
41	4
42	2
43	4
44	1
45	2
46	4
47	1
48	3
49	3
50	2
51	3
52	1
53	2
54	4
55	1
56	4
57	4
58	5
59	2
60	3
61	4
62	2
63	1
64	3
65	3
66	1
67	2
68	5
69	4
70	2
71	1
72	3
73	4
74	5
75	1
76	4
77	2
78	3
79	3
80	2
81	4
82	1
83	5
84	5
85	3
86	4
87	1
88	5

[1, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 3, 1, 3, 3, 1, 2, 2, 1, 3, 1, 2, 3, 2, 1, 3, 2, 1, 3, 4, 2, 4, 1, 3, 2, 3, 1, 3, 4, 2, 4, 1, 2, 4, 1, 3, 3, 2, 3, 1, 2, 4, 1, 4, 4, 5, 2, 3, 4, 2, 1, 3, 3, 1, 2, 5, 4, 2, 1, 3, 4, 5, 1, 4, 2, 3, 3, 2, 4, 1, 5, 5, 3, 4, 1, 5]

cp's OEIS Frontend

A331251 Triangles with integer sides i <= j <= k sorted by area, and, in case of ties, lexicographically by side lengths (smallest first). The sequence gives shortest side i. The other sides are in A331252 and A331253.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	2
10	1
11	1
12	2
13	2
14	3
15	1
16	3
17	3
18	1
19	2
20	2
21	1
22	3
23	1
24	2
25	3
26	2
27	1
28	3
29	2
30	1
31	3
32	4
33	2
34	4
35	1
36	3
37	2
38	3
39	1
40	3
41	4
42	2
43	4
44	1
45	2
46	4
47	1
48	3
49	3
50	2
51	3
52	1
53	2
54	4
55	1
56	4
57	4
58	5
59	2
60	3
61	4
62	2
63	1
64	3
65	3
66	1
67	2
68	5
69	4
70	2
71	1
72	3
73	4
74	5
75	1
76	4
77	2
78	3
79	3
80	2
81	4
82	1
83	5
84	5
85	3
86	4
87	1
88	5

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	2
10	1
11	1
12	2
13	2
14	3
15	1
16	3
17	3
18	1
19	2
20	2
21	1
22	3
23	1
24	2
25	3
26	2
27	1
28	3
29	2
30	1
31	3
32	4
33	2
34	4
35	1
36	3
37	2
38	3
39	1
40	3
41	4
42	2
43	4
44	1
45	2
46	4
47	1
48	3
49	3
50	2
51	3
52	1
53	2
54	4
55	1
56	4
57	4
58	5
59	2
60	3
61	4
62	2
63	1
64	3
65	3
66	1
67	2
68	5
69	4
70	2
71	1
72	3
73	4
74	5
75	1
76	4
77	2
78	3
79	3
80	2
81	4
82	1
83	5
84	5
85	3
86	4
87	1
88	5

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	2
10	1
11	1
12	2
13	2
14	3
15	1
16	3
17	3
18	1
19	2
20	2
21	1
22	3
23	1
24	2
25	3
26	2
27	1
28	3
29	2
30	1
31	3
32	4
33	2
34	4
35	1
36	3
37	2
38	3
39	1
40	3
41	4
42	2
43	4
44	1
45	2
46	4
47	1
48	3
49	3
50	2
51	3
52	1
53	2
54	4
55	1
56	4
57	4
58	5
59	2
60	3
61	4
62	2
63	1
64	3
65	3
66	1
67	2
68	5
69	4
70	2
71	1
72	3
73	4
74	5
75	1
76	4
77	2
78	3
79	3
80	2
81	4
82	1
83	5
84	5
85	3
86	4
87	1
88	5