OFFSET
1,1
EXAMPLE
a(1) = 4 because prime(1) = 4 - 2;
a(2) = 6 because prime(2) = 6 - 3;
a(3) = 10 because prime(3) = 10 - 5;
a(4) = 9 because prime(4) = 9 - 2;
a(5) = 14 because prime(5) = 14 - 3.
MAPLE
isA001358 := proc(n) return(numtheory[bigomega](n) = 2) ; end proc:
A188673 := proc(n) local p, j ; p := ithprime(n) ; for j from 1 do if isA001358(p+ithprime(j)) then return p+ithprime(j) ; end if; end do; end proc: # R. J. Mathar, Apr 16 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Lagneau, Apr 14 2011
STATUS
approved