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A110455
Integers with mutual residues -6.
0
7, 13, 85, 7729, 59783809, 3574104177251329, 12774220669845420831090695774209, 163180713721905992070758583926701857930269220543803914084220929
OFFSET
1,1
COMMENTS
This is the special case k=6 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
FORMULA
a(1)=7, a(2)=13, a(n)=-1+a(1)*a(2)*...*a(n-1)
a(n)=a(n)^2+6*a(n)-6, 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(6, n), n=1..8);
CROSSREFS
Sequence in context: A061521 A362246 A073220 * A177952 A320461 A132373
KEYWORD
nonn
AUTHOR
Seppo Mustonen, Sep 11 2005
STATUS
approved