A272682 - OEIS

%I #13 May 23 2016 19:27:03

%S 15,4,145,6,65,7741915625,825,85,905,30245625,325,1090619453125,36,37,

%T 38,39,402484375,414731890625,135,14,456875,46901578125,475,4885,1575,

%U 16,1625,165,5375,170759375,54893244140625,17638317373046875,1795516819326995849609375,57642802733386962890625,185

%N Square root of concatenation of n and A265432(n).

%C The square of a(n) is one of the two squares that are required by the definition of A265432(n). The other is in A272683.

%C Of course if it ever happens that A265432(n) = -1, the definition will need to be changed.

%H N. J. A. Sloane, <a href="/A272682/b272682.txt">Table of n, a(n) for n = 0..10000</a>

%H N. J. A. Sloane, <a href="/A265432/a265432.txt">Table of n, A265432(n), sqrt(concat(n,A265432(n))), sqrt(concat(1,A265432(n)))</a> (based on _David W. Wilson_ 10000-term b-file for A265432)

%Y Cf. A265432, A272683.

%K nonn,base

%O 0,1

%A _Nathan Fox_, _Brooke Logan_, and _N. J. A. Sloane_, May 23 2016