A109197 - cp's OEIS frontend

A109197 Minimal value of k > 0 such that n^2 + k^2 is semiprime.

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

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

cp's OEIS Frontend

A109197 Minimal value of k > 0 such that n^2 + k^2 is semiprime.

Table of values

List of values

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

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

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