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 A140216 Numerators of the inverse triangle defined in A133135. 1

%I

%S 1,-1,1,1,-3,1,-1,3,-2,1,1,-5,2,-5,1,-1,5,-1,5,-3,1,1,-7,1,0,3,-7,1,

%T -1,7,-4,0,2,7,-4,1,1,3,4,-21,-2,21,4,-9,1,-1,-3,13,21,-26,-21,10,9,

%U -5,1,1,-121,-13,66,26,-231,-10,33,5,-11,1,-1,121,-142,-66,229,231,-116,-33,25,11,-6

%N Numerators of the inverse triangle defined in A133135.

%C Row sums 1, 0, -1, 1, -6, 6, -8, 8, 2, -2,.. build in pairs.

%e The triangle starts

%e 1;

%e -1, 1;

%e 1,-3, 1;

%e -1, 3,-2, 1;

%e 1,-5, 2, -5, 1;

%e -1, 5,-1, 5, -3, 1;

%e 1,-7, 1, 0, 3, -7, 1;

%e -1, 7,-4, 0, 2, 7,-4, 1;

%e 1, 3, 4,-21, -2, 21, 4,-9, 1;

%e -1,-3,13, 21,-26,-21,10, 9,-5,1;

%e Pairs of numbers appear along adjacent diagonals. The first subdiagonal contains the sequence -A026741(n+2).

%Y Cf. A133135, A140218.

%K sign,frac,tabl

%O 0,5

%A _Paul Curtz_, Jun 22 2008

%E Edited by _R. J. Mathar_, Aug 06 2008

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Last modified June 12 23:17 EDT 2021. Contains 344979 sequences. (Running on oeis4.)