A253141 - cp's OEIS frontend

A253141 If n is a prime power, then a(n) = lambda(tau(n)) = A014963(A000005(n)); otherwise, a(n) = 1.

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

[1, 2, 2, 3, 2, 1, 2, 2, 3, 1, 2, 1, 2, 1, 1, 5, 2, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 3, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 7, 1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 5, 1, 2, 1, 1, 1, 1]

cp's OEIS Frontend

A253141 If n is a prime power, then a(n) = lambda(tau(n)) = A014963(A000005(n)); otherwise, a(n) = 1.

Table of values

List of values

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

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

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