A256558 - cp's OEIS frontend

A256558 Number of ways to write n = p + floor(k*(k+1)/4), where p is a prime and k is a positive integer.

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

[0, 1, 2, 1, 2, 2, 2, 3, 1, 3, 1, 4, 2, 3, 1, 3, 3, 3, 2, 4, 3, 2, 3, 4, 3, 2, 3, 1, 5, 3, 3, 3, 3, 3, 3, 3, 3, 4, 2, 3, 5, 3, 2, 6, 2, 5, 4, 4, 1, 6, 3, 4, 3, 3, 3, 5, 3, 4, 4, 2, 3, 6, 4, 5, 4, 2, 3, 5, 3, 5, 6, 2, 4, 6, 4, 5, 3, 3, 5, 5, 6, 3, 6, 2, 3, 6, 4, 4, 7, 3, 3, 5, 5, 3, 3, 2, 6, 6, 4, 5]

cp's OEIS Frontend

A256558 Number of ways to write n = p + floor(k*(k+1)/4), where p is a prime and k is a positive integer.

Table of values

List of values

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

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

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