A116344 - OEIS

%I #7 Jul 17 2021 01:44:50

%S 464,535,717,821,3427,6572,90906,980201,3636360,6363639,41176467,

%T 58823532,413533837,426573429,428571425,432620008,567379991,571428574,

%U 573426570,586466162,686261110,725274728,727272724,731321307

%N Numbers k such that k*(k+2) gives the concatenation of two numbers m and m+8.

%Y Cf. A115430, A116335, A116343, A116345.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006