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A291957 Triangle read by rows: T(n,k) = T(n-k,k-1) - T(n-k,k) + T(n-k,k+1) with T(0,0) = 1 for 0 <= k <= A003056(n). 2
1, 0, 1, 0, -1, 0, 1, 1, 0, 0, -1, 0, -1, 0, 0, 1, 1, 1, 0, 0, -1, -1, 0, -1, 1, 0, 0, 2, 0, 0, 0, -2, -2, 0, 1, 0, 0, 2, 1, -1, 0, 2, 0, 0, 0, 0, -2, -1, -1, 0, 0, 1, 2, 0, -1, 0, 1, -2, 0, 2, 1, 0, -3, -1, 0, 0, -1, 0, 2, 3, 1, -1, 0, 0, 1, -2, 0, 1, 0, 0, -3, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,28

LINKS

Seiichi Manyama, Rows n = 0..481, flattened

EXAMPLE

First few rows are:

  1;

  0,  1;

  0, -1;

  0,  1,  1;

  0,  0, -1;

  0, -1,  0;

  0,  1,  1,  1;

  0,  0, -1, -1;

  0, -1,  1,  0;

  0,  2,  0,  0;

  0, -2, -2,  0, 1.

CROSSREFS

Row sums give A291958.

Columns 0-1 give A000007, (-1)*A111165 (for n>0).

Sequence in context: A108921 A071548 A216228 * A143063 A210703 A340455

Adjacent sequences:  A291954 A291955 A291956 * A291958 A291959 A291960

KEYWORD

sign,tabf

AUTHOR

Seiichi Manyama, Sep 06 2017

STATUS

approved

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Last modified October 24 12:38 EDT 2021. Contains 348229 sequences. (Running on oeis4.)