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A127872 Triangle formed by reading A039599 mod 2. 8
1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Also triangle formed by reading triangles A061554, A106180, A110519, A124574, A124576, A126953, A127543 modulo 2.

LINKS

G. C. Greubel, Table of n, a(n) for the first 50 rows, flattened

FORMULA

Sum_{k, 0<=k<=n}T(n,k)*x^k = A000007(n), A036987(n), A001316(n), A062878(n) for n=-1,0,1,2 respectively.

Sum_{k, 0<=k<=n}T(n,k)*Fibonacci(2*k+1)=A050614(n), see A000045 and A001519. - Philippe Deléham, Aug 30 2007

EXAMPLE

Triangle begins:

1;

1, 1;

0, 1, 1;

1, 1, 1, 1;

0, 0, 0, 1, 1;

0, 0, 1, 1, 1, 1;

0, 1, 1, 0, 0, 1, 1;

1, 1, 1, 1, 1, 1, 1, 1;

0, 0, 0, 0, 0, 0, 0, 1, 1;

0, 0, 0, 0, 0, 0, 1, 1, 1, 1;

0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1;

0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1;

0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1;

0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1;

0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1;

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1; ...

MATHEMATICA

T[0, 0] := 1; T[n_, k_] := Binomial[2*n - 1, n - k] - Binomial[2*n - 1, n - k - 2]; Table[Mod[T[n, k], 2], {n, 0, 10}, {k, 0, n}] // Flatten (* G. C. Greubel, Apr 18 2017 *)

CROSSREFS

Sequence in context: A175087 A318924 A253414 * A129564 A317193 A293163

Adjacent sequences:  A127869 A127870 A127871 * A127873 A127874 A127875

KEYWORD

nonn,tabl

AUTHOR

Philippe Deléham, Apr 05 2007

STATUS

approved

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Last modified January 22 07:45 EST 2019. Contains 319353 sequences. (Running on oeis4.)