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%I #5 Jun 18 2021 18:16:41
%S 465,536,718,822,3428,6573,90907,980202,3636361,6363640,41176468,
%T 58823533,413533838,426573430,428571426,432620009,567379992,571428575,
%U 573426571,586466163,686261111,725274729,727272725,731321308
%N Numbers whose square is the concatenation of two numbers k and k+9.
%e 82640_82649 = 90907^2.
%Y Cf. A030467, A106497, A115430, A115427, A115438, A115439, A115440, A115442, A115443, A115444, A115445, A115446, A115447.
%K base,nonn
%O 1,1
%A _Giovanni Resta_, Jan 24 2006
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