A139750 - cp's OEIS frontend

A139750 Numbers n such that d_1^1 + ... + d_r^r is a prime number, where d_i are the digits of n (n = d_1, d_2, ..., d_r).

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	12
7	14
8	16
9	20
10	21
11	23
12	29
13	30
14	32
15	34
16	38
17	41
18	43
19	45
20	47
21	50
22	56
23	61
24	65
25	70
26	72
27	74
28	76
29	78
30	83
31	89
32	92
33	98
34	101
35	110
36	111
37	113
38	115
39	120
40	122
41	131
42	133
43	137
44	139
45	140
46	146
47	153
48	155
49	160
50	164
51	182
52	186
53	188
54	191
55	193
56	199
57	200
58	201
59	203
60	205
61	210

[2, 3, 5, 7, 11, 12, 14, 16, 20, 21, 23, 29, 30, 32, 34, 38, 41, 43, 45, 47, 50, 56, 61, 65, 70, 72, 74, 76, 78, 83, 89, 92, 98, 101, 110, 111, 113, 115, 120, 122, 131, 133, 137, 139, 140, 146, 153, 155, 160, 164, 182, 186, 188, 191, 193, 199, 200, 201, 203, 205, 210]

cp's OEIS Frontend

A139750 Numbers n such that d_1^1 + ... + d_r^r is a prime number, where d_i are the digits of n (n = d_1, d_2, ..., d_r).

Table of values

List of values

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	12
7	14
8	16
9	20
10	21
11	23
12	29
13	30
14	32
15	34
16	38
17	41
18	43
19	45
20	47
21	50
22	56
23	61
24	65
25	70
26	72
27	74
28	76
29	78
30	83
31	89
32	92
33	98
34	101
35	110
36	111
37	113
38	115
39	120
40	122
41	131
42	133
43	137
44	139
45	140
46	146
47	153
48	155
49	160
50	164
51	182
52	186
53	188
54	191
55	193
56	199
57	200
58	201
59	203
60	205
61	210

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	12
7	14
8	16
9	20
10	21
11	23
12	29
13	30
14	32
15	34
16	38
17	41
18	43
19	45
20	47
21	50
22	56
23	61
24	65
25	70
26	72
27	74
28	76
29	78
30	83
31	89
32	92
33	98
34	101
35	110
36	111
37	113
38	115
39	120
40	122
41	131
42	133
43	137
44	139
45	140
46	146
47	153
48	155
49	160
50	164
51	182
52	186
53	188
54	191
55	193
56	199
57	200
58	201
59	203
60	205
61	210

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	12
7	14
8	16
9	20
10	21
11	23
12	29
13	30
14	32
15	34
16	38
17	41
18	43
19	45
20	47
21	50
22	56
23	61
24	65
25	70
26	72
27	74
28	76
29	78
30	83
31	89
32	92
33	98
34	101
35	110
36	111
37	113
38	115
39	120
40	122
41	131
42	133
43	137
44	139
45	140
46	146
47	153
48	155
49	160
50	164
51	182
52	186
53	188
54	191
55	193
56	199
57	200
58	201
59	203
60	205
61	210