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%I #7 Jul 17 2021 01:44:25
%S 3,6,44,55,38162,61837,83617,346979,653020,950050,8647554,9534264,
%T 8167822282,9007920991,9209900791,9950000500,4737445289220,
%U 4990568257186,5009431742813,5262554710779,8373808925584
%N Numbers k such that k*(k+2) gives the concatenation of two numbers m and m+4.
%Y Cf. A115428, A116308, A116314, A116316, A116335.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Feb 06 2006
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