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A291940 Triangle read by rows: T(n,k) = T(n-k,k-1) - 2*T(n-k,k) + T(n-k,k+1) with T(0,0) = 1 for 0 <= k <= A003056(n). 3
1, 0, 1, 0, -2, 0, 4, 1, 0, -7, -2, 0, 12, 2, 0, -22, -3, 1, 0, 41, 8, -2, 0, -74, -15, 2, 0, 133, 23, -5, 0, -243, -42, 12, 1, 0, 444, 82, -19, -2, 0, -806, -147, 33, 2, 0, 1465, 261, -65, -5, 0, -2669, -479, 118, 10, 0, 4859, 878, -211, -15, 1, 0, -8840, -1593, 386 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,5
LINKS
EXAMPLE
First few rows are:
1;
0, 1;
0, -2;
0, 4, 1;
0, -7, -2;
0, 12, 2;
0, -22, -3, 1;
0, 41, 8, -2;
0, -74, -15, 2;
0, 133, 23, -5;
0, -243, -42, 12, 1.
CROSSREFS
Row sums give A291942.
Columns 0-1 give A000007, (-1)*A275762 (for n>0).
Sequence in context: A332696 A360880 A255330 * A153345 A140648 A153342
KEYWORD
sign,tabf
AUTHOR
Seiichi Manyama, Sep 06 2017
STATUS
approved

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Last modified March 29 06:34 EDT 2024. Contains 371265 sequences. (Running on oeis4.)