A274532 - cp's OEIS frontend

A274532 Irregular triangle read by rows: T(n,k) = sum of the elements of the k-th antidiagonal of the absolute difference table of the divisors of n.

n	a(n)
1	1
2	1
3	3
4	1
5	5
6	1
7	3
8	7
9	1
10	9
11	1
12	3
13	4
14	13
15	1
16	13
17	1
18	3
19	7
20	15
21	1
22	5
23	19
24	1
25	3
26	10
27	17
28	1
29	21
30	1
31	3
32	4
33	5
34	11
35	28
36	1
37	25
38	1
39	3
40	16
41	25
42	1
43	5
44	7
45	41
46	1
47	3
48	7
49	15
50	31
51	1
52	33
53	1
54	3
55	4
56	13
57	14
58	47
59	1
60	37
61	1
62	3
63	7
64	7
65	25
66	39
67	1
68	5
69	13
70	53
71	1
72	3
73	28
74	41
75	1
76	45
77	1
78	3
79	4
80	5
81	11
82	12
83	22
84	61
85	1
86	9
87	61
88	1
89	3
90	34
91	49
92	1
93	5
94	19
95	65

[1, 1, 3, 1, 5, 1, 3, 7, 1, 9, 1, 3, 4, 13, 1, 13, 1, 3, 7, 15, 1, 5, 19, 1, 3, 10, 17, 1, 21, 1, 3, 4, 5, 11, 28, 1, 25, 1, 3, 16, 25, 1, 5, 7, 41, 1, 3, 7, 15, 31, 1, 33, 1, 3, 4, 13, 14, 47, 1, 37, 1, 3, 7, 7, 25, 39, 1, 5, 13, 53, 1, 3, 28, 41, 1, 45, 1, 3, 4, 5, 11, 12, 22, 61, 1, 9, 61, 1, 3, 34, 49, 1, 5, 19, 65]

cp's OEIS Frontend

A274532 Irregular triangle read by rows: T(n,k) = sum of the elements of the k-th antidiagonal of the absolute difference table of the divisors of n.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	5
6	1
7	3
8	7
9	1
10	9
11	1
12	3
13	4
14	13
15	1
16	13
17	1
18	3
19	7
20	15
21	1
22	5
23	19
24	1
25	3
26	10
27	17
28	1
29	21
30	1
31	3
32	4
33	5
34	11
35	28
36	1
37	25
38	1
39	3
40	16
41	25
42	1
43	5
44	7
45	41
46	1
47	3
48	7
49	15
50	31
51	1
52	33
53	1
54	3
55	4
56	13
57	14
58	47
59	1
60	37
61	1
62	3
63	7
64	7
65	25
66	39
67	1
68	5
69	13
70	53
71	1
72	3
73	28
74	41
75	1
76	45
77	1
78	3
79	4
80	5
81	11
82	12
83	22
84	61
85	1
86	9
87	61
88	1
89	3
90	34
91	49
92	1
93	5
94	19
95	65

n	a(n)
1	1
2	1
3	3
4	1
5	5
6	1
7	3
8	7
9	1
10	9
11	1
12	3
13	4
14	13
15	1
16	13
17	1
18	3
19	7
20	15
21	1
22	5
23	19
24	1
25	3
26	10
27	17
28	1
29	21
30	1
31	3
32	4
33	5
34	11
35	28
36	1
37	25
38	1
39	3
40	16
41	25
42	1
43	5
44	7
45	41
46	1
47	3
48	7
49	15
50	31
51	1
52	33
53	1
54	3
55	4
56	13
57	14
58	47
59	1
60	37
61	1
62	3
63	7
64	7
65	25
66	39
67	1
68	5
69	13
70	53
71	1
72	3
73	28
74	41
75	1
76	45
77	1
78	3
79	4
80	5
81	11
82	12
83	22
84	61
85	1
86	9
87	61
88	1
89	3
90	34
91	49
92	1
93	5
94	19
95	65

n	a(n)
1	1
2	1
3	3
4	1
5	5
6	1
7	3
8	7
9	1
10	9
11	1
12	3
13	4
14	13
15	1
16	13
17	1
18	3
19	7
20	15
21	1
22	5
23	19
24	1
25	3
26	10
27	17
28	1
29	21
30	1
31	3
32	4
33	5
34	11
35	28
36	1
37	25
38	1
39	3
40	16
41	25
42	1
43	5
44	7
45	41
46	1
47	3
48	7
49	15
50	31
51	1
52	33
53	1
54	3
55	4
56	13
57	14
58	47
59	1
60	37
61	1
62	3
63	7
64	7
65	25
66	39
67	1
68	5
69	13
70	53
71	1
72	3
73	28
74	41
75	1
76	45
77	1
78	3
79	4
80	5
81	11
82	12
83	22
84	61
85	1
86	9
87	61
88	1
89	3
90	34
91	49
92	1
93	5
94	19
95	65