A055792 - cp's OEIS frontend

A055792 a(n) and floor(a(n)/2) are both squares; i.e., squares which remain squares when written in base 2 and last digit is removed.

n	a(n)
0	0
1	1
2	9
3	289
4	9801
5	332929
6	11309769
7	384199201
8	13051463049
9	443365544449
10	15061377048201
11	511643454094369
12	17380816062160329
13	590436102659356801
14	20057446674355970889
15	681362750825443653409
16	23146276081390728245001
17	786292024016459316676609

[0, 1, 9, 289, 9801, 332929, 11309769, 384199201, 13051463049, 443365544449, 15061377048201, 511643454094369, 17380816062160329, 590436102659356801, 20057446674355970889, 681362750825443653409, 23146276081390728245001, 786292024016459316676609]

cp's OEIS Frontend

A055792 a(n) and floor(a(n)/2) are both squares; i.e., squares which remain squares when written in base 2 and last digit is removed.

Table of values

List of values