A026470 - cp's OEIS frontend

A026470 a(n) = least positive integer > a(n-1) and not a(i)^2 + a(j)^2 for 1<=i<=j<=n.

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

[2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 16, 17, 19, 21, 22, 23, 24, 26, 27, 28, 30, 31, 33, 35, 36, 37, 38, 39, 42, 43, 44, 46, 47, 48, 49, 51, 54, 55, 56, 57, 59, 60, 62, 63, 64, 66, 67, 68, 69, 70, 71, 73, 75, 76, 77, 78, 79, 80]

cp's OEIS Frontend

A026470 a(n) = least positive integer > a(n-1) and not a(i)^2 + a(j)^2 for 1<=i<=j<=n.

Table of values

List of values

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

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

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