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Square root of concatenation(A090566(n), A090566(n+1)).
1

%I #17 Dec 02 2015 11:23:42

%S 4,25,159,531,3101,24903,243740,433129,2703038,21046245,53478992,

%T 292123372,2164833445,21425610902,48888908358,192151648872,

%U 477890021223,2279013856319,19998940546342,46961100477911,72630984382646,259140398165389,1861711571434526,14850553878036591,56672657547446354,303286443000496342,2448230500494961492,4821616822771036069,24316253937847771953

%N Square root of concatenation(A090566(n), A090566(n+1)).

%C Sequence A090566 lists the smallest integer larger than the preceding term such that their concatenation is a square. This sequence lists the square root of these squares.

%C The initial term a(0)=1 corresponds to the natural extension A090566(0):=0 (or an "empty" A090566(0)).

%C Sequence A082210 is the analog of this corresponding to the variant A082209 of A090566.

%H David W. Wilson, <a href="/A264775/b264775.txt">Table of n, a(n) for n = 1..1839</a>

%Y Cf. A090566; A082210, A082209.

%K nonn,base

%O 1,1

%A _M. F. Hasler_, Nov 24 2015