A111909 - cp's OEIS frontend

A111909 Numbers that cannot be represented as a^4 + b^2 with a, b > 0.

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	8
7	9
8	11
9	12
10	13
11	14
12	15
13	16
14	18
15	19
16	21
17	22
18	23
19	24
20	27
21	28
22	29
23	30
24	31
25	33
26	34
27	35
28	36
29	38
30	39
31	40
32	42
33	43
34	44
35	45
36	46
37	47
38	48
39	49
40	51
41	53
42	54
43	55
44	56
45	57
46	58
47	59
48	60
49	61
50	62
51	63
52	64
53	66
54	67
55	68
56	69
57	70
58	71
59	72
60	73
61	74
62	75
63	76
64	77
65	78
66	79
67	81
68	83
69	84
70	86
71	87
72	88

[1, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 18, 19, 21, 22, 23, 24, 27, 28, 29, 30, 31, 33, 34, 35, 36, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 51, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 81, 83, 84, 86, 87, 88]

cp's OEIS Frontend

A111909 Numbers that cannot be represented as a^4 + b^2 with a, b > 0.

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	8
7	9
8	11
9	12
10	13
11	14
12	15
13	16
14	18
15	19
16	21
17	22
18	23
19	24
20	27
21	28
22	29
23	30
24	31
25	33
26	34
27	35
28	36
29	38
30	39
31	40
32	42
33	43
34	44
35	45
36	46
37	47
38	48
39	49
40	51
41	53
42	54
43	55
44	56
45	57
46	58
47	59
48	60
49	61
50	62
51	63
52	64
53	66
54	67
55	68
56	69
57	70
58	71
59	72
60	73
61	74
62	75
63	76
64	77
65	78
66	79
67	81
68	83
69	84
70	86
71	87
72	88

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	8
7	9
8	11
9	12
10	13
11	14
12	15
13	16
14	18
15	19
16	21
17	22
18	23
19	24
20	27
21	28
22	29
23	30
24	31
25	33
26	34
27	35
28	36
29	38
30	39
31	40
32	42
33	43
34	44
35	45
36	46
37	47
38	48
39	49
40	51
41	53
42	54
43	55
44	56
45	57
46	58
47	59
48	60
49	61
50	62
51	63
52	64
53	66
54	67
55	68
56	69
57	70
58	71
59	72
60	73
61	74
62	75
63	76
64	77
65	78
66	79
67	81
68	83
69	84
70	86
71	87
72	88

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	8
7	9
8	11
9	12
10	13
11	14
12	15
13	16
14	18
15	19
16	21
17	22
18	23
19	24
20	27
21	28
22	29
23	30
24	31
25	33
26	34
27	35
28	36
29	38
30	39
31	40
32	42
33	43
34	44
35	45
36	46
37	47
38	48
39	49
40	51
41	53
42	54
43	55
44	56
45	57
46	58
47	59
48	60
49	61
50	62
51	63
52	64
53	66
54	67
55	68
56	69
57	70
58	71
59	72
60	73
61	74
62	75
63	76
64	77
65	78
66	79
67	81
68	83
69	84
70	86
71	87
72	88