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A166360
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Triangle of Narayana numbers mod 2, T(n,k) = A001263(n,k) mod 2.
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4
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1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1
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OFFSET
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1,1
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LINKS
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Reinhard Zumkeller, Rows n = 1..120 of triangle, flattened
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EXAMPLE
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Triangle begins:
1
1 1
1 1 1
1 0 0 1
1 0 0 0 1
1 1 0 0 1 1
1 1 1 1 1 1 1
1 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 1
1 1 0 0 0 0 0 0 1 1
1 1 1 0 0 0 0 0 1 1 1
1 0 0 1 0 0 0 0 1 0 0 1
1 0 0 0 1 0 0 0 1 0 0 0 1
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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
....
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PROG
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(PARI) p = 2; s=14; NT = matrix(s, s, n, k, binomial(n-1, k-1)*binomial(n, k-1)/k);
NTMP = matrix(s, s, n, k, NT[n, k]%p);
for(n=1, s, for(k=1, n, print1(NTMP[n, k], " ")); print())
(Haskell)
a166360 n k = a166360_tabl !! (n-1) !! (k-1)
a166360_row n = a166360_tabl !! (n-1)
a166360_tabl = map (map (flip mod 2)) a001263_tabl
-- Reinhard Zumkeller, Oct 10 2013
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CROSSREFS
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Cf. A001263, A047999, A007318.
Cf. A230116 (rows seen as binary numbers).
Sequence in context: A014191 A014086 A014163 * A143104 A127236 A117947
Adjacent sequences: A166357 A166358 A166359 * A166361 A166362 A166363
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KEYWORD
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easy,nonn,tabl
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AUTHOR
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Gerald McGarvey, Oct 12 2009
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STATUS
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approved
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