A143121 - cp's OEIS frontend

A143121 Triangle read by rows, T(n,k) = Sum_{j=k..n} prime(j), 1 <= k <= n.

n	a(n)
1	2
2	5
3	3
4	10
5	8
6	5
7	17
8	15
9	12
10	7
11	28
12	26
13	23
14	18
15	11
16	41
17	39
18	36
19	31
20	24
21	13
22	58
23	56
24	53
25	48
26	41
27	30
28	17
29	77
30	75
31	72
32	67
33	60
34	49
35	36
36	19
37	100
38	98
39	95
40	90
41	83
42	72
43	59
44	42
45	23
46	129
47	127
48	124
49	119
50	112
51	101
52	88
53	71
54	52
55	29
56	160
57	158
58	155
59	150
60	143
61	132
62	119
63	102
64	83
65	60
66	31

[2, 5, 3, 10, 8, 5, 17, 15, 12, 7, 28, 26, 23, 18, 11, 41, 39, 36, 31, 24, 13, 58, 56, 53, 48, 41, 30, 17, 77, 75, 72, 67, 60, 49, 36, 19, 100, 98, 95, 90, 83, 72, 59, 42, 23, 129, 127, 124, 119, 112, 101, 88, 71, 52, 29, 160, 158, 155, 150, 143, 132, 119, 102, 83, 60, 31]

cp's OEIS Frontend

A143121 Triangle read by rows, T(n,k) = Sum_{j=k..n} prime(j), 1 <= k <= n.

Table of values

List of values

n	a(n)
1	2
2	5
3	3
4	10
5	8
6	5
7	17
8	15
9	12
10	7
11	28
12	26
13	23
14	18
15	11
16	41
17	39
18	36
19	31
20	24
21	13
22	58
23	56
24	53
25	48
26	41
27	30
28	17
29	77
30	75
31	72
32	67
33	60
34	49
35	36
36	19
37	100
38	98
39	95
40	90
41	83
42	72
43	59
44	42
45	23
46	129
47	127
48	124
49	119
50	112
51	101
52	88
53	71
54	52
55	29
56	160
57	158
58	155
59	150
60	143
61	132
62	119
63	102
64	83
65	60
66	31

n	a(n)
1	2
2	5
3	3
4	10
5	8
6	5
7	17
8	15
9	12
10	7
11	28
12	26
13	23
14	18
15	11
16	41
17	39
18	36
19	31
20	24
21	13
22	58
23	56
24	53
25	48
26	41
27	30
28	17
29	77
30	75
31	72
32	67
33	60
34	49
35	36
36	19
37	100
38	98
39	95
40	90
41	83
42	72
43	59
44	42
45	23
46	129
47	127
48	124
49	119
50	112
51	101
52	88
53	71
54	52
55	29
56	160
57	158
58	155
59	150
60	143
61	132
62	119
63	102
64	83
65	60
66	31

n	a(n)
1	2
2	5
3	3
4	10
5	8
6	5
7	17
8	15
9	12
10	7
11	28
12	26
13	23
14	18
15	11
16	41
17	39
18	36
19	31
20	24
21	13
22	58
23	56
24	53
25	48
26	41
27	30
28	17
29	77
30	75
31	72
32	67
33	60
34	49
35	36
36	19
37	100
38	98
39	95
40	90
41	83
42	72
43	59
44	42
45	23
46	129
47	127
48	124
49	119
50	112
51	101
52	88
53	71
54	52
55	29
56	160
57	158
58	155
59	150
60	143
61	132
62	119
63	102
64	83
65	60
66	31