A319582 - cp's OEIS frontend

A319582 Square array T(n, k) = 2 ^ (Sum_{p prime} [v_p(n) >= v_p(k) > 0]) read by antidiagonals up, where [] is the Iverson bracket and v_p is the p-adic valuation, n >= 1, k >= 1.

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

[1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 4, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1]

cp's OEIS Frontend

A319582 Square array T(n, k) = 2 ^ (Sum_{p prime} [v_p(n) >= v_p(k) > 0]) read by antidiagonals up, where [] is the Iverson bracket and v_p is the p-adic valuation, n >= 1, k >= 1.

Table of values

List of values

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

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

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