A034022 - cp's OEIS frontend

A034022 Numbers that are primitively or imprimitively represented by x^2+xy+y^2, but not both.

n	a(n)
1	0
2	1
3	3
4	4
5	7
6	9
7	12
8	13
9	16
10	19
11	21
12	25
13	27
14	28
15	31
16	36
17	37
18	39
19	43
20	48
21	52
22	57
23	61
24	63
25	64
26	67
27	73
28	75
29	76
30	79
31	81
32	84
33	91
34	93
35	97
36	100
37	103
38	108
39	109
40	111
41	112
42	117
43	121
44	124
45	127
46	129
47	133
48	139
49	144
50	148
51	151
52	156
53	157
54	163
55	171
56	172
57	175
58	181
59	183
60	189
61	192
62	193
63	196
64	199
65	201
66	208
67	211
68	217
69	219
70	223
71	225

[0, 1, 3, 4, 7, 9, 12, 13, 16, 19, 21, 25, 27, 28, 31, 36, 37, 39, 43, 48, 52, 57, 61, 63, 64, 67, 73, 75, 76, 79, 81, 84, 91, 93, 97, 100, 103, 108, 109, 111, 112, 117, 121, 124, 127, 129, 133, 139, 144, 148, 151, 156, 157, 163, 171, 172, 175, 181, 183, 189, 192, 193, 196, 199, 201, 208, 211, 217, 219, 223, 225]

cp's OEIS Frontend

A034022 Numbers that are primitively or imprimitively represented by x^2+xy+y^2, but not both.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	4
5	7
6	9
7	12
8	13
9	16
10	19
11	21
12	25
13	27
14	28
15	31
16	36
17	37
18	39
19	43
20	48
21	52
22	57
23	61
24	63
25	64
26	67
27	73
28	75
29	76
30	79
31	81
32	84
33	91
34	93
35	97
36	100
37	103
38	108
39	109
40	111
41	112
42	117
43	121
44	124
45	127
46	129
47	133
48	139
49	144
50	148
51	151
52	156
53	157
54	163
55	171
56	172
57	175
58	181
59	183
60	189
61	192
62	193
63	196
64	199
65	201
66	208
67	211
68	217
69	219
70	223
71	225

n	a(n)
1	0
2	1
3	3
4	4
5	7
6	9
7	12
8	13
9	16
10	19
11	21
12	25
13	27
14	28
15	31
16	36
17	37
18	39
19	43
20	48
21	52
22	57
23	61
24	63
25	64
26	67
27	73
28	75
29	76
30	79
31	81
32	84
33	91
34	93
35	97
36	100
37	103
38	108
39	109
40	111
41	112
42	117
43	121
44	124
45	127
46	129
47	133
48	139
49	144
50	148
51	151
52	156
53	157
54	163
55	171
56	172
57	175
58	181
59	183
60	189
61	192
62	193
63	196
64	199
65	201
66	208
67	211
68	217
69	219
70	223
71	225

n	a(n)
1	0
2	1
3	3
4	4
5	7
6	9
7	12
8	13
9	16
10	19
11	21
12	25
13	27
14	28
15	31
16	36
17	37
18	39
19	43
20	48
21	52
22	57
23	61
24	63
25	64
26	67
27	73
28	75
29	76
30	79
31	81
32	84
33	91
34	93
35	97
36	100
37	103
38	108
39	109
40	111
41	112
42	117
43	121
44	124
45	127
46	129
47	133
48	139
49	144
50	148
51	151
52	156
53	157
54	163
55	171
56	172
57	175
58	181
59	183
60	189
61	192
62	193
63	196
64	199
65	201
66	208
67	211
68	217
69	219
70	223
71	225