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 A038498 Matrix inverse of partition triangle A008284. 24

%I

%S 1,-1,1,0,-1,1,1,-1,-1,1,0,1,-1,-1,1,0,1,0,-1,-1,1,-1,1,1,0,-1,-1,1,

%T -1,0,2,0,0,-1,-1,1,0,-1,0,2,0,0,-1,-1,1,0,-2,1,1,1,0,0,-1,-1,1,1,-2,

%U -1,1,1,1,0,0,-1,-1,1,1,-1,-2,0,2,0,1,0,0,-1,-1,1

%N Matrix inverse of partition triangle A008284.

%e 1; -1,1; 0,-1,1; 1,-1,-1,1; ...

%o (PARI) tp(n, k) = if (n<1, 0, if (k<1, 0, if (k == n, 1, if (k > n, 0, tp(n-1, k-1) + tp(n-k, k)))));

%o tabl(nn) = {mtp = matrix(nn, nn, n, k, tp(n, k)); mtpi = mtp^(-1); for (n = 1, nn, for (k = 1, n, print1(mtpi[n, k], ", ");); print(););} \\ _Michel Marcus_, Mar 04 2014

%Y Cf. A038497, A039800-A039810.

%K sign,tabl

%O 1,31

%A _Christian G. Bower_, Feb 15 1999

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Last modified April 24 00:02 EDT 2019. Contains 322404 sequences. (Running on oeis4.)