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A134065
Triangle read by rows: A134059 + A124927 - A007318 as infinite lower triangular matrices.
1
1, 3, 4, 3, 8, 4, 3, 12, 12, 4, 3, 16, 24, 16, 4, 3, 20, 40, 40, 20, 4, 3, 24, 60, 80, 60, 24, 4, 3, 28, 84, 140, 140, 84, 28, 4, 3, 32, 112, 224, 280, 224, 112, 32, 4, 3, 36, 144, 336, 504, 504, 336, 144, 36, 4, 3, 40, 180, 480, 840, 1008, 840, 480, 180, 40, 4, 3, 44, 220, 660, 1320, 1848, 1848, 1320, 660, 220, 44, 4
OFFSET
0,2
COMMENTS
Row sums = A078485 starting (1, 7, 15, 31, 63, 127, ...).
EXAMPLE
First few rows of the triangle:
1;
3, 4;
3, 8, 4;
3, 12, 12, 4;
3, 16, 24, 16, 4;
3, 20, 40, 40, 20, 4;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Oct 05 2007
EXTENSIONS
a(15) = 3 inserted and more terms from Georg Fischer, Jun 07 2023
STATUS
approved