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%I #6 Jul 16 2021 21:31:53
%S 8601,9423,35441,64553,73644,4851412,5148582,8784946,726216462985,
%T 753613723259,791909893642,819307153916,3654754464602947513,
%U 4527063717215234299,5472936282784765695,6345245535397052481
%N Numbers k such that k*(k+7) gives the concatenation of two numbers m and m+5.
%e 8784946 * 8784953 = 7717533//7717538, where // denotes concatenation.
%Y Cf. A116195, A116319, A116325, A116327, A116332.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Feb 06 2006
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