A331377 - cp's OEIS frontend

A331377 The areas of the triangles formed by joining three consecutive primes as vertices on the Ulam spiral.

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	4
7	2
8	6
9	3
10	6
11	12
12	0
13	4
14	6
15	9
16	4
17	2
18	8
19	0
20	6
21	3
22	9
23	18
24	4
25	4
26	0
27	0
28	2
29	14
30	18
31	8
32	2
33	4
34	6
35	0
36	18
37	0
38	6
39	9
40	0
41	8
42	2
43	0
44	4
45	0
46	72
47	6
48	3
49	0
50	0
51	0
52	10
53	0
54	18
55	0
56	0
57	4
58	4
59	0
60	3
61	49
62	28
63	0
64	0
65	12
66	24
67	12
68	6
69	0
70	0
71	15
72	9
73	0
74	6
75	6
76	0
77	0
78	16
79	0
80	0
81	10
82	0
83	0
84	3
85	9
86	0
87	0
88	0
89	4
90	0
91	12
92	12
93	0
94	0
95	4
96	24
97	0
98	11
99	21
100	12

[1, 2, 3, 3, 4, 4, 2, 6, 3, 6, 12, 0, 4, 6, 9, 4, 2, 8, 0, 6, 3, 9, 18, 4, 4, 0, 0, 2, 14, 18, 8, 2, 4, 6, 0, 18, 0, 6, 9, 0, 8, 2, 0, 4, 0, 72, 6, 3, 0, 0, 0, 10, 0, 18, 0, 0, 4, 4, 0, 3, 49, 28, 0, 0, 12, 24, 12, 6, 0, 0, 15, 9, 0, 6, 6, 0, 0, 16, 0, 0, 10, 0, 0, 3, 9, 0, 0, 0, 4, 0, 12, 12, 0, 0, 4, 24, 0, 11, 21, 12]

cp's OEIS Frontend

A331377 The areas of the triangles formed by joining three consecutive primes as vertices on the Ulam spiral.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	4
7	2
8	6
9	3
10	6
11	12
12	0
13	4
14	6
15	9
16	4
17	2
18	8
19	0
20	6
21	3
22	9
23	18
24	4
25	4
26	0
27	0
28	2
29	14
30	18
31	8
32	2
33	4
34	6
35	0
36	18
37	0
38	6
39	9
40	0
41	8
42	2
43	0
44	4
45	0
46	72
47	6
48	3
49	0
50	0
51	0
52	10
53	0
54	18
55	0
56	0
57	4
58	4
59	0
60	3
61	49
62	28
63	0
64	0
65	12
66	24
67	12
68	6
69	0
70	0
71	15
72	9
73	0
74	6
75	6
76	0
77	0
78	16
79	0
80	0
81	10
82	0
83	0
84	3
85	9
86	0
87	0
88	0
89	4
90	0
91	12
92	12
93	0
94	0
95	4
96	24
97	0
98	11
99	21
100	12

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	4
7	2
8	6
9	3
10	6
11	12
12	0
13	4
14	6
15	9
16	4
17	2
18	8
19	0
20	6
21	3
22	9
23	18
24	4
25	4
26	0
27	0
28	2
29	14
30	18
31	8
32	2
33	4
34	6
35	0
36	18
37	0
38	6
39	9
40	0
41	8
42	2
43	0
44	4
45	0
46	72
47	6
48	3
49	0
50	0
51	0
52	10
53	0
54	18
55	0
56	0
57	4
58	4
59	0
60	3
61	49
62	28
63	0
64	0
65	12
66	24
67	12
68	6
69	0
70	0
71	15
72	9
73	0
74	6
75	6
76	0
77	0
78	16
79	0
80	0
81	10
82	0
83	0
84	3
85	9
86	0
87	0
88	0
89	4
90	0
91	12
92	12
93	0
94	0
95	4
96	24
97	0
98	11
99	21
100	12

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	4
7	2
8	6
9	3
10	6
11	12
12	0
13	4
14	6
15	9
16	4
17	2
18	8
19	0
20	6
21	3
22	9
23	18
24	4
25	4
26	0
27	0
28	2
29	14
30	18
31	8
32	2
33	4
34	6
35	0
36	18
37	0
38	6
39	9
40	0
41	8
42	2
43	0
44	4
45	0
46	72
47	6
48	3
49	0
50	0
51	0
52	10
53	0
54	18
55	0
56	0
57	4
58	4
59	0
60	3
61	49
62	28
63	0
64	0
65	12
66	24
67	12
68	6
69	0
70	0
71	15
72	9
73	0
74	6
75	6
76	0
77	0
78	16
79	0
80	0
81	10
82	0
83	0
84	3
85	9
86	0
87	0
88	0
89	4
90	0
91	12
92	12
93	0
94	0
95	4
96	24
97	0
98	11
99	21
100	12