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!)
A099532 Lesser of a,b where n^2 = a^3 + b^3; a,b > 0 and gcd(a,b)=1. The greater of a,b is the corresponding term in A099533 and n, which is used to order this sequence, is the corresponding term in A099426. 3

%I #14 Oct 19 2019 03:20:24

%S 1,11,56,57,217,242,305,851,23,122,592,1706,1376,1001,2257,1960,193,

%T 781,889,1729,3071,2920,5896,1346,2137,2184,1633,8313,7034,1953,7379,

%U 9097,6104,10712,4097,12369,7082,12265,13441,15709,18314,5833,8792,8929,3641

%N Lesser of a,b where n^2 = a^3 + b^3; a,b > 0 and gcd(a,b)=1. The greater of a,b is the corresponding term in A099533 and n, which is used to order this sequence, is the corresponding term in A099426.

%H Donovan Johnson, <a href="/A099532/b099532.txt">Table of n, a(n) for n = 1..300</a>

%e a(2) is 11 because term A099426(2) is 228, 228^2 = 11^3 + 37^3 and 11 < 37.

%o (PARI) for(s=2,1e5,for(x=1,s\2,my(y=s-x);if(gcd(x,y)>1,next); if(issquare(x^3+y^3), print1(x", ")))) \\ _Charles R Greathouse IV_, Nov 06 2014

%Y Cf. A099426, A099533.

%K nonn

%O 1,2

%A _Hans Havermann_, Oct 20 2004

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 23 09:48 EDT 2024. Contains 371905 sequences. (Running on oeis4.)