A364341 - cp's OEIS frontend

A364341 a(n) is the greatest k such that there are exactly n distinct numbers j that can be expressed as the sum of two squares with k^2 < j < (k+1)^2, or -1 if such a k does not exist.

n	a(n)
0	0
1	1
2	3
3	4
4	6
5	7
6	11
7	10
8	14
9	12
10	16
11	20
12	22
13	23
14	21
15	27
16	29
17	30
18	32
19	35
20	38
21	37
22	42
23	44
24	47
25	43
26	54
27	52
28	51
29	58
30	57
31	62
32	56
33	71
34	64
35	67
36	68
37	73
38	76
39	77
40	78
41	83
42	72
43	87
44	90
45	91
46	-1
47	95
48	103
49	100
50	107
51	109
52	105
53	104
54	108
55	-1
56	116
57	119
58	110
59	129
60	117
61	126
62	-1
63	128
64	134

[0, 1, 3, 4, 6, 7, 11, 10, 14, 12, 16, 20, 22, 23, 21, 27, 29, 30, 32, 35, 38, 37, 42, 44, 47, 43, 54, 52, 51, 58, 57, 62, 56, 71, 64, 67, 68, 73, 76, 77, 78, 83, 72, 87, 90, 91, -1, 95, 103, 100, 107, 109, 105, 104, 108, -1, 116, 119, 110, 129, 117, 126, -1, 128, 134]

cp's OEIS Frontend

A364341 a(n) is the greatest k such that there are exactly n distinct numbers j that can be expressed as the sum of two squares with k^2 < j < (k+1)^2, or -1 if such a k does not exist.

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	4
4	6
5	7
6	11
7	10
8	14
9	12
10	16
11	20
12	22
13	23
14	21
15	27
16	29
17	30
18	32
19	35
20	38
21	37
22	42
23	44
24	47
25	43
26	54
27	52
28	51
29	58
30	57
31	62
32	56
33	71
34	64
35	67
36	68
37	73
38	76
39	77
40	78
41	83
42	72
43	87
44	90
45	91
46	-1
47	95
48	103
49	100
50	107
51	109
52	105
53	104
54	108
55	-1
56	116
57	119
58	110
59	129
60	117
61	126
62	-1
63	128
64	134

n	a(n)
0	0
1	1
2	3
3	4
4	6
5	7
6	11
7	10
8	14
9	12
10	16
11	20
12	22
13	23
14	21
15	27
16	29
17	30
18	32
19	35
20	38
21	37
22	42
23	44
24	47
25	43
26	54
27	52
28	51
29	58
30	57
31	62
32	56
33	71
34	64
35	67
36	68
37	73
38	76
39	77
40	78
41	83
42	72
43	87
44	90
45	91
46	-1
47	95
48	103
49	100
50	107
51	109
52	105
53	104
54	108
55	-1
56	116
57	119
58	110
59	129
60	117
61	126
62	-1
63	128
64	134

n	a(n)
0	0
1	1
2	3
3	4
4	6
5	7
6	11
7	10
8	14
9	12
10	16
11	20
12	22
13	23
14	21
15	27
16	29
17	30
18	32
19	35
20	38
21	37
22	42
23	44
24	47
25	43
26	54
27	52
28	51
29	58
30	57
31	62
32	56
33	71
34	64
35	67
36	68
37	73
38	76
39	77
40	78
41	83
42	72
43	87
44	90
45	91
46	-1
47	95
48	103
49	100
50	107
51	109
52	105
53	104
54	108
55	-1
56	116
57	119
58	110
59	129
60	117
61	126
62	-1
63	128
64	134