A256119 - cp's OEIS frontend

A256119 Least number p that is zero or an odd prime, such that n - p is a generalized pentagonal number.

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

[0, 0, 0, 3, 3, 0, 5, 0, 3, 7, 3, 11, 0, 11, 7, 0, 11, 5, 3, 7, 5, 19, 0, 11, 17, 3, 0, 5, 13, 3, 23, 5, 17, 7, 19, 0, 29, 11, 3, 13, 0, 19, 7, 3, 29, 5, 11, 7, 13, 23, 43, 0, 17, 13, 3, 29, 5, 0, 7, 19, 3, 59, 5, 23, 7, 43, 31, 41, 11, 29, 0, 31, 37, 3, 17, 5, 19, 0, 43, 53, 3, 11, 5, 13, 7, 59, 29, 17, 11, 19, 13, 79, 0, 23, 17, 3, 19, 5, 41, 7, 0]

cp's OEIS Frontend

A256119 Least number p that is zero or an odd prime, such that n - p is a generalized pentagonal number.

Table of values

List of values

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

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

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