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%I #11 Oct 15 2019 00:02:47
%S 9,49,1849,18496,103184964,7383508103184964,
%T 544680602158273835081031849649
%N a(n+1) is next smallest nontrivial square containing a(n) as a substring, initial term is 9.
%F a(n) = A050633(n)^2.
%Y Starting with a(2)=49, the sequence is identical to A050630.
%Y Cf. A050633, A048561, A050638.
%K nonn,base,more
%O 1,1
%A _Patrick De Geest_, Jul 15 1999
%E a(7) from _Max Alekseyev_, Feb 15 2012
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