%I
%S 2,2,2,3,5,5,7,7,7,11,11,11,13,13,13,17,17,17,19,19,19,23,23,23,23,23,
%T 29,29,29,29,31,31,31,31,37,37,37,37,37,41,41,41,43,43,43,47,47,47,47,
%U 47,53,53,53,53,53,53,59,59,59,59,61,61,61,61,67,67,67,67,67,71,71,71
%N Closest prime to n (break ties by taking the larger prime).
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/NearestPrime.html">Nearest Prime</a>
%t a[n_] := (np = NextPrime[n]; pp = NextPrime[np, 1]; Which[np > 2n  pp, pp, np < 2n  pp, np, True, np]); a[0] = a[1] = 2; Table[a[n], {n, 0, 71}] (* _JeanFrançois Alcover_, Oct 31 2012 *)
%Y This is the same as A051697 except that one of the 3s is deleted here.
%K nonn
%O 0,1
%A _Eric W. Weisstein_, Oct 17 2002
