A383963 - cp's OEIS frontend

A383963 Irregular triangle read by rows: T(n,k) is the sum of the k-th pair of conjugate divisors of n. If n is a square then the central term in the row n is equal to 2*sqrt(n), with n >= 1, 1 <= k <= A000005(n).

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

[2, 3, 3, 4, 4, 5, 4, 5, 6, 6, 7, 5, 5, 7, 8, 8, 9, 6, 6, 9, 10, 6, 10, 11, 7, 7, 11, 12, 12, 13, 8, 7, 7, 8, 13, 14, 14, 15, 9, 9, 15, 16, 8, 8, 16, 17, 10, 8, 10, 17, 18, 18, 19, 11, 9, 9, 11, 19, 20, 20, 21, 12, 9, 9, 12, 21, 22, 10, 10, 22, 23, 13, 13, 23, 24, 24, 25, 14, 11, 10, 10, 11, 14, 25]

cp's OEIS Frontend

A383963 Irregular triangle read by rows: T(n,k) is the sum of the k-th pair of conjugate divisors of n. If n is a square then the central term in the row n is equal to 2*sqrt(n), with n >= 1, 1 <= k <= A000005(n).

Table of values

List of values

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

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

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