A004439 - cp's OEIS frontend

A004439 Numbers that are not the sum of 2 distinct nonzero squares.

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

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 15, 16, 18, 19, 21, 22, 23, 24, 27, 28, 30, 31, 32, 33, 35, 36, 38, 39, 42, 43, 44, 46, 47, 48, 49, 51, 54, 55, 56, 57, 59, 60, 62, 63, 64, 66, 67, 69, 70, 71, 72, 75, 76, 77, 78, 79]

cp's OEIS Frontend

A004439 Numbers that are not the sum of 2 distinct nonzero squares.

Table of values

List of values

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

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

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