A087429 - cp's OEIS frontend

A087429 a(n) = 1 if gpf(n) < gpf(n+1), otherwise 0, where gpf = A006530 (greatest prime factor).

n	a(n)
1	1
2	1
3	0
4	1
5	0
6	1
7	0
8	1
9	1
10	1
11	0
12	1
13	0
14	0
15	0
16	1
17	0
18	1
19	0
20	1
21	1
22	1
23	0
24	1
25	1
26	0
27	1
28	1
29	0
30	1
31	0
32	1
33	1
34	0
35	0
36	1
37	0
38	0
39	0
40	1
41	0
42	1
43	0
44	0
45	1
46	1
47	0
48	1
49	0
50	1
51	0
52	1
53	0
54	1
55	0
56	1
57	1
58	1
59	0
60	1
61	0
62	0
63	0
64	1
65	0
66	1
67	0
68	1
69	0
70	1
71	0
72	1
73	0
74	0
75	1
76	0
77	1
78	1
79	0
80	0
81	1
82	1
83	0
84	1
85	1
86	0
87	0
88	1
89	0
90	1
91	1
92	1
93	1
94	0
95	0
96	1
97	0
98	1
99	0
100	1
101	0
102	1

[1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1]

cp's OEIS Frontend

A087429 a(n) = 1 if gpf(n) < gpf(n+1), otherwise 0, where gpf = A006530 (greatest prime factor).

Table of values

List of values

n	a(n)
1	1
2	1
3	0
4	1
5	0
6	1
7	0
8	1
9	1
10	1
11	0
12	1
13	0
14	0
15	0
16	1
17	0
18	1
19	0
20	1
21	1
22	1
23	0
24	1
25	1
26	0
27	1
28	1
29	0
30	1
31	0
32	1
33	1
34	0
35	0
36	1
37	0
38	0
39	0
40	1
41	0
42	1
43	0
44	0
45	1
46	1
47	0
48	1
49	0
50	1
51	0
52	1
53	0
54	1
55	0
56	1
57	1
58	1
59	0
60	1
61	0
62	0
63	0
64	1
65	0
66	1
67	0
68	1
69	0
70	1
71	0
72	1
73	0
74	0
75	1
76	0
77	1
78	1
79	0
80	0
81	1
82	1
83	0
84	1
85	1
86	0
87	0
88	1
89	0
90	1
91	1
92	1
93	1
94	0
95	0
96	1
97	0
98	1
99	0
100	1
101	0
102	1

n	a(n)
1	1
2	1
3	0
4	1
5	0
6	1
7	0
8	1
9	1
10	1
11	0
12	1
13	0
14	0
15	0
16	1
17	0
18	1
19	0
20	1
21	1
22	1
23	0
24	1
25	1
26	0
27	1
28	1
29	0
30	1
31	0
32	1
33	1
34	0
35	0
36	1
37	0
38	0
39	0
40	1
41	0
42	1
43	0
44	0
45	1
46	1
47	0
48	1
49	0
50	1
51	0
52	1
53	0
54	1
55	0
56	1
57	1
58	1
59	0
60	1
61	0
62	0
63	0
64	1
65	0
66	1
67	0
68	1
69	0
70	1
71	0
72	1
73	0
74	0
75	1
76	0
77	1
78	1
79	0
80	0
81	1
82	1
83	0
84	1
85	1
86	0
87	0
88	1
89	0
90	1
91	1
92	1
93	1
94	0
95	0
96	1
97	0
98	1
99	0
100	1
101	0
102	1

n	a(n)
1	1
2	1
3	0
4	1
5	0
6	1
7	0
8	1
9	1
10	1
11	0
12	1
13	0
14	0
15	0
16	1
17	0
18	1
19	0
20	1
21	1
22	1
23	0
24	1
25	1
26	0
27	1
28	1
29	0
30	1
31	0
32	1
33	1
34	0
35	0
36	1
37	0
38	0
39	0
40	1
41	0
42	1
43	0
44	0
45	1
46	1
47	0
48	1
49	0
50	1
51	0
52	1
53	0
54	1
55	0
56	1
57	1
58	1
59	0
60	1
61	0
62	0
63	0
64	1
65	0
66	1
67	0
68	1
69	0
70	1
71	0
72	1
73	0
74	0
75	1
76	0
77	1
78	1
79	0
80	0
81	1
82	1
83	0
84	1
85	1
86	0
87	0
88	1
89	0
90	1
91	1
92	1
93	1
94	0
95	0
96	1
97	0
98	1
99	0
100	1
101	0
102	1