A165784 - cp's OEIS frontend

A165784 a(1)=1. For n >= 2, each a(n) = the decimal equivalent of either a(k)U0Ua(k) or a(k)U1Ua(k), where U denotes concatenation of the binary representations of the arguments, and where k is some positive integer < n. The numbers are arranged in numerical order.

n	a(n)
1	1
2	5
3	7
4	85
5	93
6	119
7	127
8	21845
9	21973
10	23901
11	24029
12	30583
13	30711
14	32639
15	32767
16	1431655765
17	1431688533
18	1440044501
19	1440077269
20	1566399837
21	1566432605
22	1574788573
23	1574821341
24	2004318071
25	2004350839
26	2012706807
27	2012739575

[1, 5, 7, 85, 93, 119, 127, 21845, 21973, 23901, 24029, 30583, 30711, 32639, 32767, 1431655765, 1431688533, 1440044501, 1440077269, 1566399837, 1566432605, 1574788573, 1574821341, 2004318071, 2004350839, 2012706807, 2012739575]

cp's OEIS Frontend

A165784 a(1)=1. For n >= 2, each a(n) = the decimal equivalent of either a(k)U0Ua(k) or a(k)U1Ua(k), where U denotes concatenation of the binary representations of the arguments, and where k is some positive integer < n. The numbers are arranged in numerical order.

Table of values

List of values