A264619 - cp's OEIS frontend

A264619 a(0) = 1; for n>0, working in binary, write n followed by 1 then n-reversed (including leading zeros); show result in base 10.

n	a(n)
0	1
1	7
2	21
3	31
4	73
5	93
6	107
7	127
8	273
9	313
10	341
11	381
12	403
13	443
14	471
15	511
16	1057
17	1137
18	1193
19	1273
20	1317
21	1397
22	1453
23	1533
24	1571
25	1651
26	1707
27	1787
28	1831
29	1911
30	1967
31	2047
32	4161
33	4321
34	4433
35	4593
36	4681
37	4841
38	4953
39	5113
40	5189
41	5349
42	5461
43	5621
44	5709
45	5869
46	5981
47	6141
48	6211
49	6371
50	6483
51	6643
52	6731
53	6891
54	7003
55	7163
56	7239

[1, 7, 21, 31, 73, 93, 107, 127, 273, 313, 341, 381, 403, 443, 471, 511, 1057, 1137, 1193, 1273, 1317, 1397, 1453, 1533, 1571, 1651, 1707, 1787, 1831, 1911, 1967, 2047, 4161, 4321, 4433, 4593, 4681, 4841, 4953, 5113, 5189, 5349, 5461, 5621, 5709, 5869, 5981, 6141, 6211, 6371, 6483, 6643, 6731, 6891, 7003, 7163, 7239]

cp's OEIS Frontend

A264619 a(0) = 1; for n>0, working in binary, write n followed by 1 then n-reversed (including leading zeros); show result in base 10.

Table of values

List of values