This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A110389 Integers with mutual residues -1. 0
 2, 3, 5, 29, 869, 756029, 571580604869, 326704387862983487112029, 106735757048926752040856495274871386126283608869, 11392521832807516835658052968328096177131218666695418950023483907701862019030266123104859068029 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This is the special case k=1 of sequences with mutual residues -k. In general, a(1)=k+1 and a(n)=min{m | m>a(n-1), mod(m,a(i))=-k, i=1,...,n-1}. An infinite coprime sequence Same as A005267 but two first terms in reverse order LINKS S. Mustonen, On integer sequences with mutual k-residues FORMULA a(1)=2, a(2)=3, a(n)=-1+a(1)*a(2)*...*a(n-1) a(n)=a(n-1)^2+a(n-1)-1, n>3 MAPLE a:=proc(k, n::nonnegint) option remember; if n<3 then RETURN(n*k+1); fi; if n=3 then RETURN(a(k, 1)*a(k, 2)-k); fi; a(k, n-1)*(a(k, n-1)+k)-k; end; seq(a(1, n), n=1..10); MATHEMATICA Join[{2, 3}, NestList[#^2+#-1&, 5, 10]] (* Harvey P. Dale, Jul 13 2015 *) CROSSREFS Cf. A000289. Sequence in context: A093490 A073309 A226124 * A083388 A090475 A060301 Adjacent sequences:  A110386 A110387 A110388 * A110390 A110391 A110392 KEYWORD nonn AUTHOR Seppo Mustonen, Sep 11 2005 EXTENSIONS One more term (a(10)) from Harvey P. Dale, Jul 13 2015 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified August 19 13:43 EDT 2018. Contains 313863 sequences. (Running on oeis4.)