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A143119
Triangle read by rows, A051731 * A026741 * 0^(n-k), 1<=k<=n.
1
1, 1, 1, 1, 0, 3, 1, 1, 0, 2, 1, 0, 0, 0, 5, 1, 1, 3, 0, 0, 3, 1, 0, 0, 0, 0, 0, 7, 1, 1, 0, 2, 0, 0, 0, 4, 1, 0, 3, 0, 0, 0, 0, 0, 9, 1, 1, 0, 0, 5, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 1, 1, 3, 2, 0, 30, 0, 0, 0, 0, 6, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 1, 1, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 7
OFFSET
1,6
COMMENTS
Row sums = A002131: (1, 2, 4, 4, 6, 8, 8, 8, 13,...).
FORMULA
Triangle read by rows, A051731 * A026741 * 0^(n-k), 1<=k<=n, where A026741 starts (1, 1, 3, 2, 5, 3, 7, 4, 9,...).
EXAMPLE
First few rows of the triangle are:
1;
1, 1;
1, 0, 3;
1, 1, 0, 2;
1, 0, 0, 0, 5;
1, 1, 3, 0, 0, 3;
1, 0, 0, 0, 0, 0, 7;
1, 1, 0, 2, 0, 0, 0, 4;
...
CROSSREFS
Sequence in context: A238010 A370772 A011354 * A220419 A343006 A085565
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson & Mats Granvik, Jul 26 2008
STATUS
approved