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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 Seiichi Manyama, Rows n = 0..481, flattened 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). Cf. A008289, A291895, A291929. Sequence in context: A226949 A166589 A255330 * A153345 A140648 A153342 Adjacent sequences:  A291937 A291938 A291939 * A291941 A291942 A291943 KEYWORD sign,tabf AUTHOR Seiichi Manyama, Sep 06 2017 STATUS approved

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Last modified April 9 03:15 EDT 2020. Contains 333343 sequences. (Running on oeis4.)