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%I #5 Sep 03 2012 22:34:27
%S 20,9,2,4,0
%N Smallest k in which there are exactly n primes between 10*k and 10*k+9.
%t mx = 5; t = Table[-1, {mx}]; n = 0; found = 0; While[found < mx, ps = Select[Range[10*n, 10*n + 9], PrimeQ]; len = Length[ps]; If[t[[len + 1]] == -1, t[[len + 1]] = n; found++]; n++]; t (* _T. D. Noe_, Sep 03 2012 *)
%Y Cf. A186311, A032352, A007811, A078494.
%K nonn,fini,full
%O 0,1
%A _V. Raman_, Sep 03 2012
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