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%I #9 Jul 18 2021 02:52:57
%S 8444,8809,69125298546226023970,69855225553525294043,
%T 74604750601020544518,75334677608319814591,92496418993920707745,
%U 93226346001219977818,97975871048715228293,98705798056014498366
%N Numbers k such that k*(k+9) gives the concatenation of two numbers m and m-5.
%e 8809 * 8818 = 7767//7762, where // denotes concatenation.
%Y Cf. A116180, A116245, A116257, A116264.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Feb 06 2006
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