A372606 - cp's OEIS frontend

A372606 Square array T(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where T(n,k) = Sum_{j=1..n} phi(k*j).

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

[1, 1, 2, 2, 3, 4, 2, 4, 5, 6, 4, 6, 10, 9, 10, 2, 8, 10, 14, 13, 12, 6, 6, 16, 18, 22, 17, 18, 4, 12, 12, 24, 26, 28, 23, 22, 6, 12, 24, 20, 44, 34, 40, 31, 28, 4, 12, 20, 36, 28, 52, 46, 48, 37, 32, 10, 12, 30, 36, 60, 40, 76, 62, 66, 45, 42, 4, 20, 20, 42, 52, 72, 52, 92, 74, 74, 55, 46]

cp's OEIS Frontend

A372606 Square array T(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where T(n,k) = Sum_{j=1..n} phi(k*j).

Table of values

List of values

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

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

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