A342905 - cp's OEIS frontend

A342905 Array read by antidiagonals: T(n,k) = product of all distinct primes dividing n*k (n>=1, k>=1).

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

[1, 2, 2, 3, 2, 3, 2, 6, 6, 2, 5, 2, 3, 2, 5, 6, 10, 6, 6, 10, 6, 7, 6, 15, 2, 15, 6, 7, 2, 14, 6, 10, 10, 6, 14, 2, 3, 2, 21, 6, 5, 6, 21, 2, 3, 10, 6, 6, 14, 30, 30, 14, 6, 6, 10, 11, 10, 3, 2, 35, 6, 35, 2, 3, 10, 11, 6, 22, 30, 6, 10, 42, 42, 10, 6, 30, 22, 6]

cp's OEIS Frontend

A342905 Array read by antidiagonals: T(n,k) = product of all distinct primes dividing n*k (n>=1, k>=1).

Table of values

List of values

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

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

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