OFFSET
0,1
EXAMPLE
a(3) = 6 not 4 as 2 + 9 + 6 = 17 is prime, while 2+9 +4 = 15 is composite.
MAPLE
a[1]:=2:for i from 2 to 120 do j:=2:while(true)do j:=j+1:if((not isprime(j)) and (not (j=a[i-1]))) then bo:=true: for h from 1 to i-1 do if(a[h]=j) then bo:=false end if:end do:if(isprime(sum(a[k], k=1..i-1)+j) and bo=true) then a[i]:=j:break:end if:end if:end do:end do:seq(a[k], k=1..120);
CROSSREFS
KEYWORD
easy,nonn,new
AUTHOR
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 26 2002
EXTENSIONS
Corrected and extended by Sascha Kurz (sascha.kurz(AT)stud.uni-bayreuth.de), Mar 26 2002
STATUS
approved