A229166 - cp's OEIS frontend

A229166 Number of ordered ways to write n = x(x+1)/2 + y with y(y+1)/2 + 1 prime, where x and y are nonnegative integers.

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

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

cp's OEIS Frontend

A229166 Number of ordered ways to write n = x(x+1)/2 + y with y(y+1)/2 + 1 prime, where x and y are nonnegative integers.

Table of values

List of values

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

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

cp's OEIS Frontend

A229166 Number of ordered ways to write n = x*(x+1)/2 + y with y*(y+1)/2 + 1 prime, where x and y are nonnegative integers.

Table of values

List of values

A229166 Number of ordered ways to write n = x(x+1)/2 + y with y(y+1)/2 + 1 prime, where x and y are nonnegative integers.

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