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A240587 Primes p of the form n^2 + 123456789 where 123456789 is the first zeroless pandigital number. 7

%I

%S 123457189,123459289,123465253,123466789,123470713,123481753,

%T 123482389,123486373,123489913,123501733,123505189,123510613,

%U 123535189,123545593,123564373,123571033,123584953,123587833,123592213,123610453,123631513,123641689,123657493

%N Primes p of the form n^2 + 123456789 where 123456789 is the first zeroless pandigital number.

%H K. D. Bajpai, <a href="/A240587/b240587.txt">Table of n, a(n) for n = 1..1111</a>

%e 123457189 is a prime and appears in the sequence because 123457189 = 20^2 + 123456789.

%e 123459289 is a prime and appears in the sequence because 123459289 = 50^2 + 123456789.

%p KD := proc() local a; a:=n^2+123456789; if isprime(a) then RETURN (a); fi; end: seq(KD(), n=1..1000);

%t Select[Table[k^2+123456789,{k,1,3000}],PrimeQ]

%Y Cf. A000040, A002496, A028871, A050289, A056899.

%K nonn,base

%O 1,1

%A _K. D. Bajpai_, Apr 08 2014

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)