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A254077(n) mod 2.
3

%I #6 May 05 2015 20:54:31

%S 1,0,1,0,0,0,1,0,0,1,0,1,1,0,1,0,1,0,1,0,1,0,0,1,0,1,0,0,0,1,0,1,1,0,

%T 1,0,0,0,0,1,0,0,1,0,1,1,0,1,0,1,1,1,0,0,1,0,0,1,0,1,1,0,1,0,1,0,1,0,

%U 0,1,0,1,0,0,1,1,1,0,0

%N A254077(n) mod 2.

%C Much more unpredictable than (A098550 mod 2).

%H Reinhard Zumkeller, <a href="/A257585/b257585.txt">Table of n, a(n) for n = 1..10000</a>

%o (Haskell)

%o a257585 = flip mod 2 . a254077 -- _Reinhard Zumkeller_, May 05 2015

%Y Cf. A098550, A250299.

%K nonn

%O 1

%A _N. J. A. Sloane_, May 05 2015