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 A173156 Numbers n such that max(tau(n),tau(n+1),tau(n+2),tau(n+3))- min(tau(n),tau(n+1),tau(n+2),tau(n+3)) = 1. 0

%I

%S 2,20164,155236,293761,293762,643204,1435204,1444802,5216653,6120676,

%T 8421601,8421602

%N Numbers n such that max(tau(n),tau(n+1),tau(n+2),tau(n+3))- min(tau(n),tau(n+1),tau(n+2),tau(n+3)) = 1.

%e For n = 20164, max(tau(20164),tau(20165),tau(20166),tau(20167)) - min(tau(20164),tau(20165),tau(20166),tau(20167)) = max(9,8,8,8) - min(9,8,8,8) = 1.

%p with(numtheory):for n from 200000 to 1500000 do;if max(tau(n),tau(n+1),tau(n+2),tau(n+3))- min(tau(n),tau(n+1),tau(n+2),tau(n+3))= 1 then print(n); else fi ; od;

%K nonn

%O 1,1

%A _Michel Lagneau_, Feb 11 2010

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