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 A128973 Triangle formed by reading A038622 mod 2 . 1

%I

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

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

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

%N Triangle formed by reading A038622 mod 2 .

%C Also triangle formed by reading triangles A089942, A124733, A126331, A126791, A126970 modulo 2 .

%F T(n,0)=A035263(n). Sum_{k, 0<=k<=n}T(n,k)*(-1)^k = (-1)^n .

%e Triangle begins:

%e 1;

%e 0, 1;

%e 1, 1, 1;

%e 1, 1, 0, 1;

%e 1, 0, 0, 1, 1;

%e 0, 1, 1, 0, 0, 1;

%e 1, 0, 0, 1, 1, 1, 1;

%e 0, 1, 1, 0, 1, 1, 0, 1;

%e 1, 0, 0, 0, 0, 0, 0, 1, 1;

%K nonn,tabl

%O 0,1

%A _Philippe DelĂ©ham_, Apr 28 2007

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Last modified March 28 14:24 EDT 2020. Contains 333089 sequences. (Running on oeis4.)