This site is supported by donations to The OEIS Foundation.

 Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A050794 Consider the Diophantine equation x^3+y^3=z^3+1 (1
 1729, 1092728, 3375001, 15438250, 121287376, 401947273, 3680797185, 6352182209, 7856862273, 12422690497, 73244501505, 145697644729, 179406144001, 648787169394, 938601300672, 985966166178, 1594232306569 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Note that a(1)=1729 is the Hardy-Ramanujan number. - Omar E. Pol, Jan 28 2009 REFERENCES Ian Stewart, "Game, Set and Math", Chapter 8, 'Close Encounters of the Fermat Kind', Penguin Books, Ed. 1991, pp. 107-124. David Wells, "Curious and Interesting Numbers", Revised Ed. 1997, Penguin Books, On number "729", p. 147. LINKS Uwe Hollerbach and David Rabahy, Table of n, a(n) for n = 1..368[Terms 75 through 368 were computed by David Rabahy, Oct 13 2015] Eric Weisstein's World of Mathematics, Diophantine Equation - 3rd Powers EXAMPLE 577^3 + 2304^3 = 2316^3 + 1 = 12422690497. CROSSREFS Cf. A050791, A050792, A050793, A259753. Sequence in context: A182087 A033502 A277366 * A138130 A048949 A258166 Adjacent sequences:  A050791 A050792 A050793 * A050795 A050796 A050797 KEYWORD nonn AUTHOR Patrick De Geest, Sep 15 1999 EXTENSIONS Extended through 1594232306569 by Jud McCranie, Dec 25 2000 STATUS approved

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

Last modified December 17 02:28 EST 2018. Contains 318192 sequences. (Running on oeis4.)