A374451 - cp's OEIS frontend

A374451 Triangle T(n, k), n > 1, k = 1..n-1, read by rows; T(n, k) is the least prime number p such that the p-adic valuations of n and k differ.

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

[2, 3, 2, 2, 2, 2, 5, 2, 3, 2, 2, 3, 2, 2, 2, 7, 2, 3, 2, 5, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 2, 2, 5, 2, 2, 2, 3, 2, 2, 2, 11, 2, 3, 2, 5, 2, 7, 2, 3, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 13, 2, 3, 2, 5, 2, 7, 2, 3, 2, 11, 2, 2, 7, 2, 2, 2, 3, 2, 2, 2, 5, 2, 2, 2]

cp's OEIS Frontend

A374451 Triangle T(n, k), n > 1, k = 1..n-1, read by rows; T(n, k) is the least prime number p such that the p-adic valuations of n and k differ.

Table of values

List of values

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

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

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