A349787 - cp's OEIS frontend

A349787 Number of ways to write n as x^2 + y^k + 2^a + 2^b, where x,y,a,b are nonnegative integers with x >= y and a >= b, and k is either 2 or 3.

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

[2, 4, 6, 6, 8, 8, 8, 8, 11, 9, 11, 11, 12, 8, 9, 11, 15, 14, 16, 16, 17, 8, 10, 14, 15, 12, 16, 16, 12, 7, 11, 17, 22, 16, 17, 18, 17, 10, 16, 22, 23, 15, 17, 19, 17, 8, 15, 23, 19, 11, 20, 23, 17, 12, 17, 20, 20, 14, 18, 18, 13, 7, 12, 21, 23, 21, 25, 27, 26, 11, 17, 27, 25, 15, 22, 24, 14, 8, 17, 27, 29, 20, 29, 28]

cp's OEIS Frontend

A349787 Number of ways to write n as x^2 + y^k + 2^a + 2^b, where x,y,a,b are nonnegative integers with x >= y and a >= b, and k is either 2 or 3.

Table of values

List of values

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

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

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