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%I #7 Jul 17 2021 01:44:31
%S 7745,8019,33294316,66705681,98000199,340465755423,476452552743,
%T 523547447254,659534244574,866013200679,998000001999,3695104677080132,
%U 3755782995538766,4198081170077529,4803478892324964,5196521107675033
%N Numbers k such that k*(k+4) gives the concatenation of two numbers m and m+4.
%e 98000199 * 98000203 = 96040393//96040397, where // denotes concatenation.
%Y Cf. A115429, A116297, A116316, A116318, A116323.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Feb 06 2006
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