A321997 - cp's OEIS frontend

A321997 Numbers that cannot be written using seven 7's and operations +, -, * and/or /. Complement of A258068.

n	a(n)
1	38
2	66
3	67
4	68
5	73
6	74
7	75
8	76
9	79
10	80
11	81
12	87
13	88
14	108
15	109
16	115
17	116
18	117
19	118
20	121
21	122
22	123
23	124
24	125
25	127
26	128
27	129
28	130
29	131
30	132
31	134
32	135
33	136
34	137
35	138
36	142
37	143
38	151
39	152
40	156
41	157
42	158
43	159
44	160
45	162
46	163
47	164
48	165
49	166
50	167
51	169
52	170
53	173
54	174
55	176
56	177
57	178
58	179

[38, 66, 67, 68, 73, 74, 75, 76, 79, 80, 81, 87, 88, 108, 109, 115, 116, 117, 118, 121, 122, 123, 124, 125, 127, 128, 129, 130, 131, 132, 134, 135, 136, 137, 138, 142, 143, 151, 152, 156, 157, 158, 159, 160, 162, 163, 164, 165, 166, 167, 169, 170, 173, 174, 176, 177, 178, 179]

cp's OEIS Frontend

A321997 Numbers that cannot be written using seven 7's and operations +, -, * and/or /. Complement of A258068.

Table of values

List of values

n	a(n)
1	38
2	66
3	67
4	68
5	73
6	74
7	75
8	76
9	79
10	80
11	81
12	87
13	88
14	108
15	109
16	115
17	116
18	117
19	118
20	121
21	122
22	123
23	124
24	125
25	127
26	128
27	129
28	130
29	131
30	132
31	134
32	135
33	136
34	137
35	138
36	142
37	143
38	151
39	152
40	156
41	157
42	158
43	159
44	160
45	162
46	163
47	164
48	165
49	166
50	167
51	169
52	170
53	173
54	174
55	176
56	177
57	178
58	179

n	a(n)
1	38
2	66
3	67
4	68
5	73
6	74
7	75
8	76
9	79
10	80
11	81
12	87
13	88
14	108
15	109
16	115
17	116
18	117
19	118
20	121
21	122
22	123
23	124
24	125
25	127
26	128
27	129
28	130
29	131
30	132
31	134
32	135
33	136
34	137
35	138
36	142
37	143
38	151
39	152
40	156
41	157
42	158
43	159
44	160
45	162
46	163
47	164
48	165
49	166
50	167
51	169
52	170
53	173
54	174
55	176
56	177
57	178
58	179

n	a(n)
1	38
2	66
3	67
4	68
5	73
6	74
7	75
8	76
9	79
10	80
11	81
12	87
13	88
14	108
15	109
16	115
17	116
18	117
19	118
20	121
21	122
22	123
23	124
24	125
25	127
26	128
27	129
28	130
29	131
30	132
31	134
32	135
33	136
34	137
35	138
36	142
37	143
38	151
39	152
40	156
41	157
42	158
43	159
44	160
45	162
46	163
47	164
48	165
49	166
50	167
51	169
52	170
53	173
54	174
55	176
56	177
57	178
58	179