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 A069021 Start of the first occurrence of n consecutive numbers divisible by a square. 3

%I

%S 1,8,48,242,844,22020,217070,1092747,8870024,221167422,221167422,

%T 47255689915,82462576220,1043460553364,79180770078548,

%U 3215226335143218,23742453640900972

%N Start of the first occurrence of n consecutive numbers divisible by a square.

%t a = {1, 1}; k = 4; Do[ While[ Min[a] < 2, k++; a = Drop[a, 1]; a = Append[ a, Max[ Transpose[ FactorInteger[k]] [[2]] ]]]; Print[k - n + 1]; k++; a = Append[ a, Max[ Transpose[ FactorInteger[k]] [[2]] ]], {n, 2, 9}]

%Y Apart from first term, identical to A045882.

%K nonn

%O 1,2

%A _Amarnath Murthy_, Apr 02 2002

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Last modified December 7 16:40 EST 2021. Contains 349581 sequences. (Running on oeis4.)