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A134520
Triangle read by rows: A007318 + A128174 - A000012 as infinite lower triangular matrices.
0
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, 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, 45, 119, 210, 251, 210, 119, 45, 9, 1, 0, 11, 54, 165, 329, 462, 461, 330, 164, 55, 10, 1
OFFSET
0,8
COMMENTS
Row sums = A084174: (1, 1, 3, 6, 14, 29, 61, ...).
EXAMPLE
First few rows of the triangle:
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, 35, 34, 21, 6, 1;
1, 7, 28, 55, 70, 55, 28, 7, 1;
...
CROSSREFS
Sequence in context: A152175 A321620 A353157 * A188316 A197027 A143772
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Oct 29 2007
EXTENSIONS
a(45) = 1 corrected and more terms from Georg Fischer, Jun 07 2023
STATUS
approved