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A115534 Numbers k such that k^2 is the concatenation of two numbers 3*m and m. 0

%I #8 Jul 15 2021 21:22:36

%S 85714286,128571429,171428572,69230769231,92307692308,115384615385,

%T 138461538462,161538461539,

%U 85714285714285714285714285714285714285714285714286

%N Numbers k such that k^2 is the concatenation of two numbers 3*m and m.

%e 85714286^2 = 73469388_24489796.

%Y Cf. A102567, A106497, A115527 - A115556.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Jan 25 2006

%E Definition modified by _Georg Fischer_, Jul 26 2019

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)