A161363 - OEIS

%I #14 Jun 05 2023 15:29:07

%S 1,-1,1,-2,0,1,-2,-1,0,1,-4,-1,0,0,1,-3,-2,-1,0,0,1,-7,-2,-1,0,0,0,1,

%T -7,-3,-1,-1,0,0,0,1,-12,-3,-2,-1,0,0,0,0,1,-13,-5,-2,-1,-1,0,0,0,0,1,

%U -22,-6,-3,-1,-1,0,0,0,0,0,1,-25,-7,-3,-2,-1,-1,0,0,0,0,0,1,-42,-9,-4,-2,-1,-1,0,0,0,0,0,0,1

%N Inverse of the partition triangle A026794.

%C Row sums = A161375. A modified version of this triangle = A161364.

%F Triangle read by rows, inverse of A026794.

%e First few rows of the triangle =

%e 1;

%e -1, 1;

%e -2, 0, 1;

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

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

%e -3, -2, -1, 0, 0, 1;

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

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

%e -12, -3, -2, -1, 0, 0, 0, 0, 1;

%e -13, -5, -2, -1, -1, 0, 0, 0, 0, 1;

%e -22, -6, -3, -1, -1, 0, 0, 0, 0, 0, 1;

%e ...

%Y Cf. A000041, A026794, A161364, A161375.

%K tabl,sign

%O 1,4

%A _Gary W. Adamson_, Jun 07 2009

%E a(3) = 1 corrected and more terms from _Georg Fischer_, Jun 05 2023