A302907 - cp's OEIS frontend

A302907 For any number m with decimal digits (d_1, ..., d_k), let s(m) be the area of the convex hull of the set of points { (i, d_i), i = 1..k }; a(n) = 2 * s(prime(n)) (where prime(n) denotes the n-th prime number).

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

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 8, 10, 2, 4, 4, 2, 4, 2, 8, 2, 8, 4, 10, 4, 14, 16, 14, 10, 8, 1, 1, 5, 7, 1, 5, 5, 7, 1, 7, 1, 11, 5, 13, 11, 13, 10, 2, 4, 8, 2, 4, 2, 4, 4, 2, 2, 8, 2, 10, 4, 8, 5, 13, 11, 1]

cp's OEIS Frontend

A302907 For any number m with decimal digits (d_1, ..., d_k), let s(m) be the area of the convex hull of the set of points { (i, d_i), i = 1..k }; a(n) = 2 * s(prime(n)) (where prime(n) denotes the n-th prime number).

Table of values

List of values

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

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

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