%I #8 Feb 11 2023 20:32:45
%S 1,8,16,146,22086,31071113326,365107058344463715696,
%T 2684967738644586785227227090233956040549004,
%U 809079884187716191997158821357206898310718837487307207657194711477350102495950972665
%N a(1) = 1; a(n) = least number such that the concatenation a(n)a(n-1)...a(2)a(1) is a square.
%H Sean A. Irvine, <a href="https://github.com/archmageirvine/joeis/blob/master/src/irvine/oeis/a061/A061359.java">Java program</a> (github)
%e a(3)a(2)a(1) = 1681 = 41^2, a(4)a(3)a(2)a(1) = 1461681 = 1209^2.
%Y Cf. A050634, A050635.
%K nonn,base
%O 1,2
%A _Amarnath Murthy_, Apr 28 2001
%E Corrected and extended by Larry Reeves (larryr(AT)acm.org), May 07 2001
%E More terms from Ulrich Schimke (ulrschimke(AT)aol.com), Nov 06 2001
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