1,1
Table of n, a(n) for n=1..59.
i:=1:for k from 1 to 1200 do if isprime(k) and isprime(k+6)and isprime(k+12) then a[i]:=k:a[i+1]:=k+6:a[i+2]:=k+12:i:=i+3 fi od: seq(a[n], n=1..i-1);
Cf. A001097.
Sequence in context: A041491 A058025 A042121 * A084037 A077130 A119754
Adjacent sequences: A123079 A123080 A123081 * A123083 A123084 A123085
nonn
Miklos Kristof, Sep 27 2006
approved