A018826 - cp's OEIS frontend

A018826 Numbers n such that n is a substring of its square when both are written in base 2.

n	a(n)
1	0
2	1
3	2
4	4
5	8
6	16
7	27
8	32
9	41
10	54
11	64
12	82
13	108
14	128
15	145
16	164
17	165
18	256
19	283
20	290
21	328
22	487
23	512
24	545
25	566
26	580
27	974
28	1024
29	1090
30	1132
31	1160
32	1773
33	1948
34	2048
35	2113
36	2180
37	2320
38	2701
39	3546
40	3896
41	4096
42	4226
43	4261
44	4360
45	4757
46	5402
47	7092
48	7625
49	8079
50	8192

[0, 1, 2, 4, 8, 16, 27, 32, 41, 54, 64, 82, 108, 128, 145, 164, 165, 256, 283, 290, 328, 487, 512, 545, 566, 580, 974, 1024, 1090, 1132, 1160, 1773, 1948, 2048, 2113, 2180, 2320, 2701, 3546, 3896, 4096, 4226, 4261, 4360, 4757, 5402, 7092, 7625, 8079, 8192]

cp's OEIS Frontend

A018826 Numbers n such that n is a substring of its square when both are written in base 2.

Table of values

List of values