A262979 - cp's OEIS frontend

A262979 Number of ordered ways to write n as x^4 + phi(y^2) + z(3z-1)/2 with x >= 0 and y > 0, where phi(.) is Euler's totient function given by A000010.

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

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

cp's OEIS Frontend

A262979 Number of ordered ways to write n as x^4 + phi(y^2) + z(3z-1)/2 with x >= 0 and y > 0, where phi(.) is Euler's totient function given by A000010.

Table of values

List of values

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

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

cp's OEIS Frontend

A262979 Number of ordered ways to write n as x^4 + phi(y^2) + z*(3*z-1)/2 with x >= 0 and y > 0, where phi(.) is Euler's totient function given by A000010.

Table of values

List of values

A262979 Number of ordered ways to write n as x^4 + phi(y^2) + z(3z-1)/2 with x >= 0 and y > 0, where phi(.) is Euler's totient function given by A000010.

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