

A122398


Sequence is inverse permutation to A122397.


2



1, 2, 3, 4, 8, 5, 11, 7, 12, 6, 18, 14, 21, 9, 10, 17, 32, 15, 35, 28, 13, 16, 40, 22, 27, 19, 24, 31, 49, 25, 56, 45, 20, 30, 29, 36, 68, 33, 23, 41, 73, 26, 82, 48, 39, 38, 83, 44, 55, 46, 34, 61, 97, 43, 50, 57, 37, 47, 105, 52, 116, 54, 53, 64, 63, 59, 123, 69, 42, 62, 132
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OFFSET

1,2


COMMENTS

Sequence is probably a permutation of the positive integers.


LINKS



MAPLE

A[1]:= 1: A[2]:= 2: A[3]:= 3: B[1]:=1: B[2]:= 2: B[3]:= 3:
S:= {$4..300}:
for n from 4 do
P:= numtheory:factorset(A[n2]);
for s in S do
if member(igcd(s, A[n2]), P) then
A[n]:= s; B[s]:= n; S:= S minus {s}; break
fi
od;
if not assigned(A[n]) then break fi;
od:


CROSSREFS



KEYWORD

nonn


AUTHOR



EXTENSIONS



STATUS

approved



