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A134520 Triangle read by rows: A007318 + A128174 - A000012 as infinite lower triangular matrices. 0

%I #10 Jun 07 2023 08:51:15

%S 1,0,1,1,1,1,0,3,2,1,1,3,6,3,1,0,5,9,10,4,1,1,5,15,19,15,5,1,0,7,20,

%T 35,34,21,6,1,1,7,28,55,70,55,28,7,1,0,9,35,84,125,126,83,36,8,1,1,9,

%U 45,119,210,251,210,119,45,9,1,0,11,54,165,329,462,461,330,164,55,10,1

%N Triangle read by rows: A007318 + A128174 - A000012 as infinite lower triangular matrices.

%C Row sums = A084174: (1, 1, 3, 6, 14, 29, 61, ...).

%e First few rows of the triangle:

%e 1;

%e 0, 1;

%e 1, 1, 1;

%e 0, 3, 2, 1;

%e 1, 3, 6, 3, 1;

%e 0, 5, 9, 10, 4, 1;

%e 1, 5, 15, 19, 15, 5, 1;

%e 0, 7, 20, 35, 34, 21, 6, 1;

%e 1, 7, 28, 55, 70, 55, 28, 7, 1;

%e ...

%Y Cf. A084174, A128174.

%K nonn,tabl

%O 0,8

%A _Gary W. Adamson_, Oct 29 2007

%E a(45) = 1 corrected and more terms from _Georg Fischer_, Jun 07 2023

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)