A141809 - cp's OEIS frontend

A141809 Irregular table: Row n (of A001221(n) terms, for n>=2) consists of the largest powers that divides n of each distinct prime that divides n. Terms are arranged by the size of the distinct primes. Row 1 = (1).

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

[1, 2, 3, 4, 5, 2, 3, 7, 8, 9, 2, 5, 11, 4, 3, 13, 2, 7, 3, 5, 16, 17, 2, 9, 19, 4, 5, 3, 7, 2, 11, 23, 8, 3, 25, 2, 13, 27, 4, 7, 29, 2, 3, 5, 31, 32, 3, 11, 2, 17, 5, 7, 4, 9, 37, 2, 19, 3, 13, 8, 5, 41, 2, 3, 7, 43, 4, 11, 9, 5, 2, 23, 47, 16, 3, 49, 2, 25, 3, 17, 4, 13, 53, 2, 27, 5, 11, 8, 7, 3]

cp's OEIS Frontend

A141809 Irregular table: Row n (of A001221(n) terms, for n>=2) consists of the largest powers that divides n of each distinct prime that divides n. Terms are arranged by the size of the distinct primes. Row 1 = (1).

Table of values

List of values

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

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

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