A048995 - cp's OEIS frontend

A048995 Numbers that are not the sum of the nontrivial factors (excluding 1 and n) of some natural number.

n	a(n)
1	1
2	4
3	51
4	87
5	95
6	119
7	123
8	145
9	161
10	187
11	205
12	209
13	215
14	237
15	245
16	247
17	261
18	267
19	275
20	287
21	289
22	291
23	303
24	305
25	321
26	323
27	325
28	335
29	341
30	371
31	405
32	407
33	425
34	429
35	447
36	471
37	473
38	497
39	515
40	517
41	519
42	529
43	539
44	551
45	555
46	561
47	575
48	583
49	611
50	623
51	625
52	627
53	657

[1, 4, 51, 87, 95, 119, 123, 145, 161, 187, 205, 209, 215, 237, 245, 247, 261, 267, 275, 287, 289, 291, 303, 305, 321, 323, 325, 335, 341, 371, 405, 407, 425, 429, 447, 471, 473, 497, 515, 517, 519, 529, 539, 551, 555, 561, 575, 583, 611, 623, 625, 627, 657]

cp's OEIS Frontend

A048995 Numbers that are not the sum of the nontrivial factors (excluding 1 and n) of some natural number.

Table of values

List of values

n	a(n)
1	1
2	4
3	51
4	87
5	95
6	119
7	123
8	145
9	161
10	187
11	205
12	209
13	215
14	237
15	245
16	247
17	261
18	267
19	275
20	287
21	289
22	291
23	303
24	305
25	321
26	323
27	325
28	335
29	341
30	371
31	405
32	407
33	425
34	429
35	447
36	471
37	473
38	497
39	515
40	517
41	519
42	529
43	539
44	551
45	555
46	561
47	575
48	583
49	611
50	623
51	625
52	627
53	657

n	a(n)
1	1
2	4
3	51
4	87
5	95
6	119
7	123
8	145
9	161
10	187
11	205
12	209
13	215
14	237
15	245
16	247
17	261
18	267
19	275
20	287
21	289
22	291
23	303
24	305
25	321
26	323
27	325
28	335
29	341
30	371
31	405
32	407
33	425
34	429
35	447
36	471
37	473
38	497
39	515
40	517
41	519
42	529
43	539
44	551
45	555
46	561
47	575
48	583
49	611
50	623
51	625
52	627
53	657

n	a(n)
1	1
2	4
3	51
4	87
5	95
6	119
7	123
8	145
9	161
10	187
11	205
12	209
13	215
14	237
15	245
16	247
17	261
18	267
19	275
20	287
21	289
22	291
23	303
24	305
25	321
26	323
27	325
28	335
29	341
30	371
31	405
32	407
33	425
34	429
35	447
36	471
37	473
38	497
39	515
40	517
41	519
42	529
43	539
44	551
45	555
46	561
47	575
48	583
49	611
50	623
51	625
52	627
53	657