A274140 - cp's OEIS frontend

A274140 Sum of primes dividing n-th triangular number, counted with multiplicity.

n	a(n)
1	0
2	3
3	5
4	7
5	8
6	10
7	11
8	10
9	11
10	16
11	16
12	18
13	20
14	15
15	14
16	23
17	23
18	25
19	26
20	17
21	21
22	34
23	30
24	17
25	23
26	22
27	18
28	38
29	37
30	39
31	39
32	22
33	31
34	29
35	20
36	45
37	56
38	35
39	25
40	50
41	51
42	53
43	56
44	24
45	34
46	70
47	56
48	23
49	24
50	30
51	35
52	68
53	62
54	25
55	27
56	33
57	51
58	88
59	69
60	71
61	92
62	44
63	23
64	28
65	32
66	81
67	86
68	45
69	38
70	83
71	81
72	83
73	110
74	50
75	34
76	39
77	34
78	95
79	90

[0, 3, 5, 7, 8, 10, 11, 10, 11, 16, 16, 18, 20, 15, 14, 23, 23, 25, 26, 17, 21, 34, 30, 17, 23, 22, 18, 38, 37, 39, 39, 22, 31, 29, 20, 45, 56, 35, 25, 50, 51, 53, 56, 24, 34, 70, 56, 23, 24, 30, 35, 68, 62, 25, 27, 33, 51, 88, 69, 71, 92, 44, 23, 28, 32, 81, 86, 45, 38, 83, 81, 83, 110, 50, 34, 39, 34, 95, 90]

cp's OEIS Frontend

A274140 Sum of primes dividing n-th triangular number, counted with multiplicity.

Table of values

List of values

n	a(n)
1	0
2	3
3	5
4	7
5	8
6	10
7	11
8	10
9	11
10	16
11	16
12	18
13	20
14	15
15	14
16	23
17	23
18	25
19	26
20	17
21	21
22	34
23	30
24	17
25	23
26	22
27	18
28	38
29	37
30	39
31	39
32	22
33	31
34	29
35	20
36	45
37	56
38	35
39	25
40	50
41	51
42	53
43	56
44	24
45	34
46	70
47	56
48	23
49	24
50	30
51	35
52	68
53	62
54	25
55	27
56	33
57	51
58	88
59	69
60	71
61	92
62	44
63	23
64	28
65	32
66	81
67	86
68	45
69	38
70	83
71	81
72	83
73	110
74	50
75	34
76	39
77	34
78	95
79	90

n	a(n)
1	0
2	3
3	5
4	7
5	8
6	10
7	11
8	10
9	11
10	16
11	16
12	18
13	20
14	15
15	14
16	23
17	23
18	25
19	26
20	17
21	21
22	34
23	30
24	17
25	23
26	22
27	18
28	38
29	37
30	39
31	39
32	22
33	31
34	29
35	20
36	45
37	56
38	35
39	25
40	50
41	51
42	53
43	56
44	24
45	34
46	70
47	56
48	23
49	24
50	30
51	35
52	68
53	62
54	25
55	27
56	33
57	51
58	88
59	69
60	71
61	92
62	44
63	23
64	28
65	32
66	81
67	86
68	45
69	38
70	83
71	81
72	83
73	110
74	50
75	34
76	39
77	34
78	95
79	90

n	a(n)
1	0
2	3
3	5
4	7
5	8
6	10
7	11
8	10
9	11
10	16
11	16
12	18
13	20
14	15
15	14
16	23
17	23
18	25
19	26
20	17
21	21
22	34
23	30
24	17
25	23
26	22
27	18
28	38
29	37
30	39
31	39
32	22
33	31
34	29
35	20
36	45
37	56
38	35
39	25
40	50
41	51
42	53
43	56
44	24
45	34
46	70
47	56
48	23
49	24
50	30
51	35
52	68
53	62
54	25
55	27
56	33
57	51
58	88
59	69
60	71
61	92
62	44
63	23
64	28
65	32
66	81
67	86
68	45
69	38
70	83
71	81
72	83
73	110
74	50
75	34
76	39
77	34
78	95
79	90