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!)
A224863 Prime(n) such that prime(3n) - prime(2n) - prime(n) is a perfect cube. 1

%I #22 May 11 2023 12:47:40

%S 2,31,911,929,941,997,1013,4273,4289,8171,13171,20233,20261,57139,

%T 123637,229631,278609,278689,328277,526213,611213,703267,906229,

%U 1287479,1287623,1290031,1442549,1442723,1443257,1443311,1443383,1948343,1948669,2361899,3331093

%N Prime(n) such that prime(3n) - prime(2n) - prime(n) is a perfect cube.

%C The prime indices n are 1, 11, 156, 158, 160, 168, 170, 587, 589, 1026,... and the cubes are 0, 27, 343 (repeated 5 times), 1331 (repeated 2 times), 2197, 3375, 4913 (repeated 2 times),... - _R. J. Mathar_, Jul 27 2013

%H Giovanni Resta, <a href="/A224863/b224863.txt">Table of n, a(n) for n = 1..1000</a>

%e 31 is in the sequence because 31 = prime(11) and prime(3*11) - prime(2*11) - prime(11) = 137 - 79 - 31 = 27 = 3^3.

%K nonn

%O 1,1

%A _Juri-Stepan Gerasimov_, Jul 22 2013

%E a(3) - a(38) from _Jack Brennen_, Jul 18 2013

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 April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)