A026469 - cp's OEIS frontend

A026469 a(1) = 1; for n > 1, a(n) = least positive integer > a(n-1) and not equal to a(i)^2 + a(j)^2 for 1<=i<=j<=n-1.

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

[1, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 19, 20, 21, 22, 23, 24, 27, 28, 29, 30, 31, 33, 35, 36, 38, 39, 40, 42, 43, 44, 46, 47, 48, 49, 51, 53, 54, 55, 56, 57, 59, 60, 62, 63, 64, 66, 67, 68, 69, 70, 71, 75, 76, 77, 78, 79]

cp's OEIS Frontend

A026469 a(1) = 1; for n > 1, a(n) = least positive integer > a(n-1) and not equal to a(i)^2 + a(j)^2 for 1<=i<=j<=n-1.

Table of values

List of values

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

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

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