A229072 - cp's OEIS frontend

A229072 Lexicographically earliest sequence of distinct natural numbers such that, for any number n in the sequence, the positions of the 1's in the binary representation of n are in the sequence, whereas the positions of the 0's are not.

n	a(n)
1	1
2	4
3	9
4	18
5	36
6	72
7	144
8	289
9	578
10	1156
11	2312
12	4624
13	9248
14	18496
15	36992
16	73984
17	147969
18	295938
19	591876
20	1183752
21	2367504
22	4735008
23	9470016
24	18940032
25	37880064
26	75760128
27	151520256
28	303040512
29	606081024
30	1212162048
31	2424324096
32	4848648192
33	9697296384

[1, 4, 9, 18, 36, 72, 144, 289, 578, 1156, 2312, 4624, 9248, 18496, 36992, 73984, 147969, 295938, 591876, 1183752, 2367504, 4735008, 9470016, 18940032, 37880064, 75760128, 151520256, 303040512, 606081024, 1212162048, 2424324096, 4848648192, 9697296384]

cp's OEIS Frontend

A229072 Lexicographically earliest sequence of distinct natural numbers such that, for any number n in the sequence, the positions of the 1's in the binary representation of n are in the sequence, whereas the positions of the 0's are not.

Table of values

List of values