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A062120 Numbers n such that n has sqrt(n) as its middle digits. 2

%I

%S 1,2500,3600,62500,14379264,57760000,141376000000,245495475625,

%T 390625000000,943971582724,4482669527413081,8790937600000000,

%U 31561776563446336,10235319926865509025

%N Numbers n such that n has sqrt(n) as its middle digits.

%t Do[ If[ StringPosition[ ToString[n^2], ToString[n]] [[1, 1]] == (Ceiling[ Log[10, n^2] ] - Ceiling[ Log[10, n] ])/2 + 1, Print[n^2] ], {n, 1, 10^9} ]

%Y A062120 = A062118^2.

%K nonn,base

%O 1,2

%A Brian Wallace (wallacebrianedward(AT)yahoo.co.uk), Jun 28 2001

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Last modified May 16 09:28 EDT 2021. Contains 343940 sequences. (Running on oeis4.)