A022831 - cp's OEIS frontend

A022831 a(n) = c(1)p(1) + ... + c(n)p(n), where c(i) = 1 if a(i-1) <= p(i) and c(i) = -1 if a(i-1) > p(i), for i = 1,...,n (p(i) = primes).

n	a(n)
1	2
2	5
3	10
4	3
5	14
6	1
7	18
8	37
9	14
10	43
11	12
12	49
13	8
14	51
15	4
16	57
17	116
18	55
19	122
20	51
21	124
22	45
23	128
24	39
25	136
26	35
27	138
28	31
29	140
30	27
31	154
32	23
33	160
34	21
35	170
36	19
37	176
38	13
39	180
40	7
41	186
42	5
43	196
44	3
45	200
46	1
47	212
48	435
49	208
50	437
51	204
52	443
53	202
54	453
55	196
56	459
57	190
58	461
59	184

[2, 5, 10, 3, 14, 1, 18, 37, 14, 43, 12, 49, 8, 51, 4, 57, 116, 55, 122, 51, 124, 45, 128, 39, 136, 35, 138, 31, 140, 27, 154, 23, 160, 21, 170, 19, 176, 13, 180, 7, 186, 5, 196, 3, 200, 1, 212, 435, 208, 437, 204, 443, 202, 453, 196, 459, 190, 461, 184]

cp's OEIS Frontend

A022831 a(n) = c(1)p(1) + ... + c(n)p(n), where c(i) = 1 if a(i-1) <= p(i) and c(i) = -1 if a(i-1) > p(i), for i = 1,...,n (p(i) = primes).

Table of values

List of values

n	a(n)
1	2
2	5
3	10
4	3
5	14
6	1
7	18
8	37
9	14
10	43
11	12
12	49
13	8
14	51
15	4
16	57
17	116
18	55
19	122
20	51
21	124
22	45
23	128
24	39
25	136
26	35
27	138
28	31
29	140
30	27
31	154
32	23
33	160
34	21
35	170
36	19
37	176
38	13
39	180
40	7
41	186
42	5
43	196
44	3
45	200
46	1
47	212
48	435
49	208
50	437
51	204
52	443
53	202
54	453
55	196
56	459
57	190
58	461
59	184

n	a(n)
1	2
2	5
3	10
4	3
5	14
6	1
7	18
8	37
9	14
10	43
11	12
12	49
13	8
14	51
15	4
16	57
17	116
18	55
19	122
20	51
21	124
22	45
23	128
24	39
25	136
26	35
27	138
28	31
29	140
30	27
31	154
32	23
33	160
34	21
35	170
36	19
37	176
38	13
39	180
40	7
41	186
42	5
43	196
44	3
45	200
46	1
47	212
48	435
49	208
50	437
51	204
52	443
53	202
54	453
55	196
56	459
57	190
58	461
59	184

n	a(n)
1	2
2	5
3	10
4	3
5	14
6	1
7	18
8	37
9	14
10	43
11	12
12	49
13	8
14	51
15	4
16	57
17	116
18	55
19	122
20	51
21	124
22	45
23	128
24	39
25	136
26	35
27	138
28	31
29	140
30	27
31	154
32	23
33	160
34	21
35	170
36	19
37	176
38	13
39	180
40	7
41	186
42	5
43	196
44	3
45	200
46	1
47	212
48	435
49	208
50	437
51	204
52	443
53	202
54	453
55	196
56	459
57	190
58	461
59	184