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Triangle read by rows: 2*A133113 - A000012 as infinite lower triangular matrices.
0

%I #11 Jun 10 2023 08:09:25

%S 1,3,1,7,3,1,11,7,7,1,17,11,21,7,1,23,17,47,21,11,1,31,23,91,47,43,11,

%T 1,39,31,159,91,123,43,15,1,49,39,259,159,295,123,73,15,1,59,49,399,

%U 259,627,295,255,73,19,1,71,59,589,399,1219,627,733,255,111,19,1,83,71,839,589,2211,1219,1839,733,459,111,23,1

%N Triangle read by rows: 2*A133113 - A000012 as infinite lower triangular matrices.

%C Left column = A047838: (1, 3, 7, 11, 17, 23, ...).

%C Row sums = A000295: (1, 4, 11, 26, 57, ...).

%e First few rows of the triangle:

%e 1;

%e 3, 1;

%e 7, 3, 1;

%e 11, 7, 7, 1;

%e 17, 11, 21, 7, 1;

%e 23, 17, 47, 21, 11, 1;

%e 31, 23, 91, 47, 43, 11, 1;

%e ...

%Y Cf. A000295, A047838, A133113.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Sep 14 2007

%E a(46) = 59 corrected and more terms from _Georg Fischer_, Jun 10 2023