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A175689 a(n) is the smallest square that has n as a string immediately before the final digit, or 0 if no such number exists. 0

%I

%S 16,25,36,49,256,64,576,81,196,100,2116,121,3136,144,1156,169,50176,

%T 5184,196,2209,9216,225,11236,3249,256,43264,30276,289,1296,2304,

%U 21316,324,24336,35344,4356,361,15376,16384,7396,400,38416,17424,42436,441

%N a(n) is the smallest square that has n as a string immediately before the final digit, or 0 if no such number exists.

%C The first 0 term is a(101): there is no square that ends in "101X".

%K base,nonn

%O 1,1

%A _Claudio Meller_, Aug 09 2010

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Last modified May 6 09:45 EDT 2021. Contains 343580 sequences. (Running on oeis4.)