login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A110459 Integers with mutual residues -7. 0
8, 15, 113, 13553, 183778673, 33774601936091633, 1140723735941444920716624925248113, 1301250641740207358399613061389386702544244320473228561469086797553 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This is the special case k=7 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

LINKS

Table of n, a(n) for n=1..8.

S. Mustonen, On integer sequences with mutual k-residues

FORMULA

a(1)=8, a(2)=15, a(n)=-1+a(1)*a(2)*...*a(n-1)

a(n)=a(n)^2+7*a(n)-7, 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(7, n), n=1..8);

CROSSREFS

Sequence in context: A177165 A189003 A110294 * A132374 A234534 A067686

Adjacent sequences:  A110456 A110457 A110458 * A110460 A110461 A110462

KEYWORD

nonn

AUTHOR

Seppo Mustonen, Sep 11 2005

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 18 11:48 EDT 2019. Contains 325139 sequences. (Running on oeis4.)