A262311 - cp's OEIS frontend

A262311 Number of ordered ways to write n = x^2 + y^2 + phi(z^2) (0 <= x <= y and z > 0) with y or z prime, where phi(.) is Euler's totient function given by A000010.

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

[0, 1, 1, 1, 1, 3, 2, 1, 1, 3, 3, 2, 1, 2, 2, 3, 2, 2, 3, 3, 3, 4, 1, 2, 2, 3, 3, 2, 1, 3, 3, 1, 2, 2, 2, 3, 4, 4, 1, 3, 2, 6, 3, 2, 4, 4, 3, 1, 3, 4, 5, 5, 3, 3, 3, 4, 4, 8, 4, 3, 5, 4, 2, 2, 3, 6, 6, 1, 2, 5, 3, 2, 4, 5, 2, 2, 2, 3, 3, 2, 3, 6, 3, 2, 3, 3, 4, 4, 3, 3, 4, 5, 4, 3, 3, 1, 4, 3, 2, 3]

cp's OEIS Frontend

A262311 Number of ordered ways to write n = x^2 + y^2 + phi(z^2) (0 <= x <= y and z > 0) with y or z prime, where phi(.) is Euler's totient function given by A000010.

Table of values

List of values

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

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

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