A379004 - cp's OEIS frontend

A379004 Lexicographically earliest infinite sequence such that a(i) = a(j) => v_2(i) = v_2(j) and v_5(i) = v_5(j), for all i, j, where v_2 (A007814) and v_5 (A112765) give the 2- and 5-adic valuations of n respectively.

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	2
7	1
8	5
9	1
10	6
11	1
12	3
13	1
14	2
15	4
16	7
17	1
18	2
19	1
20	8
21	1
22	2
23	1
24	5
25	9
26	2
27	1
28	3
29	1
30	6
31	1
32	10
33	1
34	2
35	4
36	3
37	1
38	2
39	1
40	11
41	1
42	2
43	1
44	3
45	4
46	2
47	1
48	7
49	1
50	12
51	1
52	3
53	1
54	2
55	4
56	5
57	1
58	2
59	1
60	8
61	1
62	2
63	1
64	13
65	4
66	2
67	1
68	3
69	1
70	6
71	1
72	5
73	1
74	2
75	9
76	3
77	1
78	2
79	1
80	14
81	1
82	2
83	1
84	3
85	4
86	2
87	1
88	5
89	1
90	6
91	1
92	3
93	1
94	2
95	4
96	10
97	1
98	2
99	1
100	15
101	1
102	2
103	1
104	5
105	4

[1, 2, 1, 3, 4, 2, 1, 5, 1, 6, 1, 3, 1, 2, 4, 7, 1, 2, 1, 8, 1, 2, 1, 5, 9, 2, 1, 3, 1, 6, 1, 10, 1, 2, 4, 3, 1, 2, 1, 11, 1, 2, 1, 3, 4, 2, 1, 7, 1, 12, 1, 3, 1, 2, 4, 5, 1, 2, 1, 8, 1, 2, 1, 13, 4, 2, 1, 3, 1, 6, 1, 5, 1, 2, 9, 3, 1, 2, 1, 14, 1, 2, 1, 3, 4, 2, 1, 5, 1, 6, 1, 3, 1, 2, 4, 10, 1, 2, 1, 15, 1, 2, 1, 5, 4]

cp's OEIS Frontend

A379004 Lexicographically earliest infinite sequence such that a(i) = a(j) => v_2(i) = v_2(j) and v_5(i) = v_5(j), for all i, j, where v_2 (A007814) and v_5 (A112765) give the 2- and 5-adic valuations of n respectively.

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	2
7	1
8	5
9	1
10	6
11	1
12	3
13	1
14	2
15	4
16	7
17	1
18	2
19	1
20	8
21	1
22	2
23	1
24	5
25	9
26	2
27	1
28	3
29	1
30	6
31	1
32	10
33	1
34	2
35	4
36	3
37	1
38	2
39	1
40	11
41	1
42	2
43	1
44	3
45	4
46	2
47	1
48	7
49	1
50	12
51	1
52	3
53	1
54	2
55	4
56	5
57	1
58	2
59	1
60	8
61	1
62	2
63	1
64	13
65	4
66	2
67	1
68	3
69	1
70	6
71	1
72	5
73	1
74	2
75	9
76	3
77	1
78	2
79	1
80	14
81	1
82	2
83	1
84	3
85	4
86	2
87	1
88	5
89	1
90	6
91	1
92	3
93	1
94	2
95	4
96	10
97	1
98	2
99	1
100	15
101	1
102	2
103	1
104	5
105	4

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	2
7	1
8	5
9	1
10	6
11	1
12	3
13	1
14	2
15	4
16	7
17	1
18	2
19	1
20	8
21	1
22	2
23	1
24	5
25	9
26	2
27	1
28	3
29	1
30	6
31	1
32	10
33	1
34	2
35	4
36	3
37	1
38	2
39	1
40	11
41	1
42	2
43	1
44	3
45	4
46	2
47	1
48	7
49	1
50	12
51	1
52	3
53	1
54	2
55	4
56	5
57	1
58	2
59	1
60	8
61	1
62	2
63	1
64	13
65	4
66	2
67	1
68	3
69	1
70	6
71	1
72	5
73	1
74	2
75	9
76	3
77	1
78	2
79	1
80	14
81	1
82	2
83	1
84	3
85	4
86	2
87	1
88	5
89	1
90	6
91	1
92	3
93	1
94	2
95	4
96	10
97	1
98	2
99	1
100	15
101	1
102	2
103	1
104	5
105	4

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	2
7	1
8	5
9	1
10	6
11	1
12	3
13	1
14	2
15	4
16	7
17	1
18	2
19	1
20	8
21	1
22	2
23	1
24	5
25	9
26	2
27	1
28	3
29	1
30	6
31	1
32	10
33	1
34	2
35	4
36	3
37	1
38	2
39	1
40	11
41	1
42	2
43	1
44	3
45	4
46	2
47	1
48	7
49	1
50	12
51	1
52	3
53	1
54	2
55	4
56	5
57	1
58	2
59	1
60	8
61	1
62	2
63	1
64	13
65	4
66	2
67	1
68	3
69	1
70	6
71	1
72	5
73	1
74	2
75	9
76	3
77	1
78	2
79	1
80	14
81	1
82	2
83	1
84	3
85	4
86	2
87	1
88	5
89	1
90	6
91	1
92	3
93	1
94	2
95	4
96	10
97	1
98	2
99	1
100	15
101	1
102	2
103	1
104	5
105	4