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A132823 A007318 + 2*A103451 - 2*A000012. 5
1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 2, 4, 2, 1, 1, 3, 8, 8, 3, 1, 1, 4, 13, 18, 13, 4, 1, 1, 5, 19, 33, 33, 19, 5, 1, 1, 6, 26, 54, 68, 54, 26, 6, 1, 1, 7, 34, 82, 124, 124, 82, 34, 7, 1, 1, 8, 43, 118, 208, 250, 208, 118, 43, 8, 1, 1, 9, 53, 163, 328, 460, 460, 328, 163, 53, 9, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
0,12
COMMENTS
Row sums = A132824: (1, 2, 2, 4, 10, 24, 54, 116, 242, ...).
LINKS
FORMULA
A007318 + 2*A103451 - 2*A000012 as infinite lower triangular matrices.
EXAMPLE
First few rows of the triangle:
1;
1, 1;
1, 0, 1;
1, 1, 1, 1;
1, 2, 4, 2, 1;
1, 3, 8, 8, 3, 1;
1, 4, 13, 18, 13, 4, 1;
1, 5, 19, 33, 33, 19, 5, 1;
1, 6, 26, 54, 68, 54, 26, 6, 1;
1, 7, 34, 82, 124, 124, 82, 34, 7, 1;
...
CROSSREFS
A(2n,n) gives A115112 for n>0.
Sequence in context: A052285 A046858 A225812 * A059317 A322046 A247644
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Sep 02 2007
EXTENSIONS
One missing 1 inserted and more terms added by Alois P. Heinz, Feb 10 2019
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)