Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #4 Nov 26 2014 23:07:50
%S 681937766,100716507368734,189028109645534,71751688194664150,
%T 227043315919690540,297394840740237334,1419552352384980734,
%U 3520763199738226713640,556493116743365697692834,512910449523173299820851231016,142652152739062776543664373622484,2608329468084714843076226780545984
%N Numbers whose squares remain squares when prepended with 8 and appended with 25 in base 10.
%H Chai Wah Wu, <a href="/A250434/b250434.txt">Table of n, a(n) for n = 1..17</a>
%e 681937766^2 = 465039116697070756, 846503911669707075625 = 29094740275^2.
%Y Cf. A249621, A249968, A249969, A249970, A249971, A249972, A250433, A250435.
%K nonn,base
%O 1,1
%A _Chai Wah Wu_, Nov 24 2014