login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A227443 Numbers k such that k and k+1 have the same binary XOR of divisors. 1
6, 110, 116, 194, 198, 204, 237, 437, 452, 507, 965, 969, 986, 1011, 1736, 1748, 1808, 1824, 1896, 1971, 1989, 2021, 3696, 6230, 6243, 6533, 6875, 12974, 13736, 13764, 14567, 14790, 15720, 26625, 29516, 29715, 32102, 49251, 55686, 57489, 61329, 64440, 99780, 104247, 114738 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

n such that A178910(n+1) = A178910(n).

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..700

MATHEMATICA

b[n_] := BitXor @@ Divisors[n]; b1 = 0; s = {}; Do[b2 = b[n]; If[b1 == b2, AppendTo[s, n-1]]; b1 = b2, {n, 1, 10^4}]; s (* Amiram Eldar, Sep 19 2019 *)

CROSSREFS

Cf. A178910, A002961.

Sequence in context: A193810 A217987 A119814 * A050884 A156554 A197325

Adjacent sequences:  A227440 A227441 A227442 * A227444 A227445 A227446

KEYWORD

nonn,base

AUTHOR

Alex Ratushnyak, Jul 11 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 5 07:45 EDT 2022. Contains 357252 sequences. (Running on oeis4.)