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Primes which are the reverse concatenation of four consecutive square numbers.
4

%I #6 Sep 07 2020 18:43:33

%S 576529484441,7056688967246561,34596342253385633489,

%T 49284488414840047961,202500201601200704199809,

%U 230400229441228484227529,260100259081258064257049,389376388129386884385641

%N Primes which are the reverse concatenation of four consecutive square numbers.

%H Harvey P. Dale, <a href="/A104303/b104303.txt">Table of n, a(n) for n = 1..1000</a>

%e The first term is 576529484441 which is a prime and is the reverse concatenation of 441,484,529 and 576 which are four consecutive square numbers.

%t Select[FromDigits[Flatten[IntegerDigits/@#]]&/@(Reverse/@Partition[ Range[ 1000]^2,4,1]),PrimeQ] (* _Harvey P. Dale_, Sep 07 2020 *)

%K base,nonn

%O 1,1

%A _Shyam Sunder Gupta_, Apr 17 2005