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 A208152 Triangle by rows, generated from the Ruler sequence A001511. 0

%I

%S 1,1,1,3,2,1,6,4,1,1,24,16,4,3,1,48,32,8,6,1,1,144,96,24,18,3,2,1,188,

%T 192,48,36,6,4,1,1,1440,960,240,180,30,20,5,4,1,2880,1920,480,360,60,

%U 10,8,1,1,8640,5760,1440,1080,180,120,30,24,3,2,1

%N Triangle by rows, generated from the Ruler sequence A001511.

%C Row sums = A208147: (1, 2, 6, 12, 48, 96, 288, ...).

%F Inverse of:

%F 1;

%F -1, 1;

%F -1, -2, 1;

%F -1, -2, -1, 1;

%F -1, -2, -1, -3, 1;

%F -1, -2, -1, -3, -1, 1;

%F -1, -2, -1, -3, -1, -2, 1;

%F ..., where the signed terms are negatives of A001511 terms: (1, 2, 1, 3, 1, 2, 1, 4, ...).

%e First few rows of the triangle =

%e 1;

%e 1, 1;

%e 3, 2, 1;

%e 6, 4, 1, 1;

%e 24, 16, 4, 3, 1;

%e 48, 32, 8, 6, 1, 1;

%e 144, 96, 24, 18, 3, 2, 1;

%e 288, 192, 48, 36, 6, 4, 1, 1;

%e 1440, 960, 240, 180, 30, 20, 5, 4, 1;

%e 2880, 1920, 480, 360, 60, 40, 10, 8, 1, 1;

%e 8640, 5760, 1440, 1080, 180, 120, 30, 24, 3, 2, 1;

%e ...

%Y Cf. A001511, A208147.

%K nonn,tabl

%O 1,4

%A _Gary W. Adamson_, Feb 23 2012

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Last modified March 31 21:40 EDT 2023. Contains 361673 sequences. (Running on oeis4.)