A165821 - cp's OEIS frontend

A165821 a(n) = the smallest positive integer that, when written in binary, contains both binary n and the binary representation of the n-th prime as substrings.

n	a(n)
1	2
2	6
3	11
4	28
5	11
6	13
7	71
8	152
9	151
10	58
11	95
12	101
13	105
14	174
15	47
16	848
17	571
18	978
19	1075
20	327
21	1173
22	719
23	1335
24	1432
25	1561
26	1626
27	827
28	860
29	237
30	241
31	127
32	131
33	4233
34	139
35	4501
36	1175
37	4765
38	2467
39	167
40	1384
41	5299
42	362
43	703
44	705
45	1581
46	1479
47	3027
48	3568
49	227
50	229

[2, 6, 11, 28, 11, 13, 71, 152, 151, 58, 95, 101, 105, 174, 47, 848, 571, 978, 1075, 327, 1173, 719, 1335, 1432, 1561, 1626, 827, 860, 237, 241, 127, 131, 4233, 139, 4501, 1175, 4765, 2467, 167, 1384, 5299, 362, 703, 705, 1581, 1479, 3027, 3568, 227, 229]

cp's OEIS Frontend

A165821 a(n) = the smallest positive integer that, when written in binary, contains both binary n and the binary representation of the n-th prime as substrings.

Table of values

List of values