A333911 - cp's OEIS frontend

A333911 Numbers k such that sigma(k) is the sum of 2 squares, where sigma is the sum of divisors function (A000203).

n	a(n)
1	1
2	3
3	7
4	9
5	10
6	17
7	19
8	21
9	22
10	27
11	30
12	31
13	40
14	46
15	51
16	52
17	55
18	57
19	58
20	63
21	66
22	67
23	70
24	71
25	73
26	79
27	81
28	88
29	89
30	90
31	93
32	94
33	97
34	103
35	106
36	115
37	118
38	119
39	120
40	127
41	133
42	138
43	145
44	153
45	154
46	156
47	163
48	165
49	170
50	171
51	174
52	179
53	184
54	189
55	190
56	193
57	198
58	199
59	201
60	202

[1, 3, 7, 9, 10, 17, 19, 21, 22, 27, 30, 31, 40, 46, 51, 52, 55, 57, 58, 63, 66, 67, 70, 71, 73, 79, 81, 88, 89, 90, 93, 94, 97, 103, 106, 115, 118, 119, 120, 127, 133, 138, 145, 153, 154, 156, 163, 165, 170, 171, 174, 179, 184, 189, 190, 193, 198, 199, 201, 202]

cp's OEIS Frontend

A333911 Numbers k such that sigma(k) is the sum of 2 squares, where sigma is the sum of divisors function (A000203).

Table of values

List of values

n	a(n)
1	1
2	3
3	7
4	9
5	10
6	17
7	19
8	21
9	22
10	27
11	30
12	31
13	40
14	46
15	51
16	52
17	55
18	57
19	58
20	63
21	66
22	67
23	70
24	71
25	73
26	79
27	81
28	88
29	89
30	90
31	93
32	94
33	97
34	103
35	106
36	115
37	118
38	119
39	120
40	127
41	133
42	138
43	145
44	153
45	154
46	156
47	163
48	165
49	170
50	171
51	174
52	179
53	184
54	189
55	190
56	193
57	198
58	199
59	201
60	202

n	a(n)
1	1
2	3
3	7
4	9
5	10
6	17
7	19
8	21
9	22
10	27
11	30
12	31
13	40
14	46
15	51
16	52
17	55
18	57
19	58
20	63
21	66
22	67
23	70
24	71
25	73
26	79
27	81
28	88
29	89
30	90
31	93
32	94
33	97
34	103
35	106
36	115
37	118
38	119
39	120
40	127
41	133
42	138
43	145
44	153
45	154
46	156
47	163
48	165
49	170
50	171
51	174
52	179
53	184
54	189
55	190
56	193
57	198
58	199
59	201
60	202

n	a(n)
1	1
2	3
3	7
4	9
5	10
6	17
7	19
8	21
9	22
10	27
11	30
12	31
13	40
14	46
15	51
16	52
17	55
18	57
19	58
20	63
21	66
22	67
23	70
24	71
25	73
26	79
27	81
28	88
29	89
30	90
31	93
32	94
33	97
34	103
35	106
36	115
37	118
38	119
39	120
40	127
41	133
42	138
43	145
44	153
45	154
46	156
47	163
48	165
49	170
50	171
51	174
52	179
53	184
54	189
55	190
56	193
57	198
58	199
59	201
60	202