Search: id:A075412
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%I A075412
%S A075412 0,9,1089,110889,11108889,1111088889,111110888889,11111108888889,
%T A075412 1111111088888889,111111110888888889,11111111108888888889,
%U A075412 1111111111088888888889,111111111110888888888889
%N A075412 Squares of A002277.
%C A075412 A transformation of the Wonderful Demlo numbers (A002477).
%H A075412 G. Villemin, <a href="http://perso.wanadoo.fr/yoda.guillaume/P100a500/
               Carrerep.htm">Variations sur les carres</a>
%F A075412 a(n) = A002277(n)^2 = (3 * A002275(n) )^2 = 9 * (A002275(n) )^2
%F A075412 a(n) = {111111... (2n times)} - 2*{ 111... (n times)} a(n) = A000042(2n) 
               - 2*A000042(n). - Amarnath Murthy (amarnath_murthy(AT)yahoo.com), 
               Jul 21 2003
%F A075412 a(n)={333... (n times)}^2 ={111...(n times)}{000... (n times)} - {111... 
               (n times)}. For example, 333^2 = 111000 - 111 = 110889. [From Kyle 
               D. Balliet (kdballie(AT)bloomu.edu), Mar 07 2009]
%e A075412 a(2) = 33^2 = 1089.
%Y A075412 Cf. A075411, A075412, A075413, A075414, A075415, A075416, A075417, A002283.
%Y A075412 Sequence in context: A054344 A048912 A036411 this_sequence A084149 A020261 
               A076442
%Y A075412 Adjacent sequences: A075409 A075410 A075411 this_sequence A075413 A075414 
               A075415
%K A075412 easy,nonn
%O A075412 0,2
%A A075412 Michael Taylor (michael.taylor(AT)vf.vodafone.co.uk), Sep 14 2002

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