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%I #5 Jun 18 2021 18:16:51
%S 7747,8021,33294318,66705683,98000201,340465755425,476452552745,
%T 523547447256,659534244576,866013200681,998000002001,3695104677080134,
%U 3755782995538768,4198081170077531,4803478892324966,5196521107675035
%N Numbers whose square is the concatenation of two numbers k and k+8.
%e 6001_6009 = 7747^2.
%Y Cf. A030467, A106497, A115429, A115427, A115438, A115439, A115441, A115442, A115443, A115444, A115445, A115446, A115447.
%K base,nonn
%O 1,1
%A _Giovanni Resta_, Jan 24 2006
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