A249122 - cp's OEIS frontend

A249122 a(n) = floor(n / lpf(n^2 + 1)) where lpf(n^2 + 1) is the smallest prime divisor of n^2 + 1.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	3
8	1
9	4
10	0
11	5
12	2
13	6
14	0
15	7
16	0
17	8
18	3
19	9
20	0
21	10
22	4
23	11
24	0
25	12
26	0
27	13
28	5
29	14
30	1
31	15
32	6
33	16
34	2
35	17
36	0
37	18
38	7
39	19
40	0
41	20
42	8
43	21
44	3
45	22
46	1
47	23
48	9
49	24
50	1
51	25
52	10
53	26
54	0
55	27
56	0
57	28
58	11
59	29
60	4
61	30
62	12
63	31
64	3
65	32
66	0
67	33
68	13
69	34
70	5
71	35
72	14
73	36
74	0
75	37
76	1

[0, 0, 1, 0, 2, 0, 3, 1, 4, 0, 5, 2, 6, 0, 7, 0, 8, 3, 9, 0, 10, 4, 11, 0, 12, 0, 13, 5, 14, 1, 15, 6, 16, 2, 17, 0, 18, 7, 19, 0, 20, 8, 21, 3, 22, 1, 23, 9, 24, 1, 25, 10, 26, 0, 27, 0, 28, 11, 29, 4, 30, 12, 31, 3, 32, 0, 33, 13, 34, 5, 35, 14, 36, 0, 37, 1]

cp's OEIS Frontend

A249122 a(n) = floor(n / lpf(n^2 + 1)) where lpf(n^2 + 1) is the smallest prime divisor of n^2 + 1.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	3
8	1
9	4
10	0
11	5
12	2
13	6
14	0
15	7
16	0
17	8
18	3
19	9
20	0
21	10
22	4
23	11
24	0
25	12
26	0
27	13
28	5
29	14
30	1
31	15
32	6
33	16
34	2
35	17
36	0
37	18
38	7
39	19
40	0
41	20
42	8
43	21
44	3
45	22
46	1
47	23
48	9
49	24
50	1
51	25
52	10
53	26
54	0
55	27
56	0
57	28
58	11
59	29
60	4
61	30
62	12
63	31
64	3
65	32
66	0
67	33
68	13
69	34
70	5
71	35
72	14
73	36
74	0
75	37
76	1

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	3
8	1
9	4
10	0
11	5
12	2
13	6
14	0
15	7
16	0
17	8
18	3
19	9
20	0
21	10
22	4
23	11
24	0
25	12
26	0
27	13
28	5
29	14
30	1
31	15
32	6
33	16
34	2
35	17
36	0
37	18
38	7
39	19
40	0
41	20
42	8
43	21
44	3
45	22
46	1
47	23
48	9
49	24
50	1
51	25
52	10
53	26
54	0
55	27
56	0
57	28
58	11
59	29
60	4
61	30
62	12
63	31
64	3
65	32
66	0
67	33
68	13
69	34
70	5
71	35
72	14
73	36
74	0
75	37
76	1

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	3
8	1
9	4
10	0
11	5
12	2
13	6
14	0
15	7
16	0
17	8
18	3
19	9
20	0
21	10
22	4
23	11
24	0
25	12
26	0
27	13
28	5
29	14
30	1
31	15
32	6
33	16
34	2
35	17
36	0
37	18
38	7
39	19
40	0
41	20
42	8
43	21
44	3
45	22
46	1
47	23
48	9
49	24
50	1
51	25
52	10
53	26
54	0
55	27
56	0
57	28
58	11
59	29
60	4
61	30
62	12
63	31
64	3
65	32
66	0
67	33
68	13
69	34
70	5
71	35
72	14
73	36
74	0
75	37
76	1