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A181653
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Generalized (conditional) Riordan array with k-th column generated by x^k*(1+x) if k mod 2 = 0, x^k*(1+x+x^2) otherwise.
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1
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1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1
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OFFSET
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0,1
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COMMENTS
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LINKS
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EXAMPLE
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Triangle begins
1;
1, 1;
0, 1, 1;
0, 1, 1, 1;
0, 0, 0, 1, 1;
0, 0, 0, 1, 1, 1;
0, 0, 0, 0, 0, 1, 1;
0, 0, 0, 0, 0, 1, 1, 1;
0, 0, 0, 0, 0, 0, 0, 1, 1;
0, 0, 0, 0, 0, 0, 0, 1, 1, 1;
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1;
Production matrix begins
1, 1;
-1, 0, 1;
1, 1, 0, 1;
0, -1, -1, 0, 1;
0, 1, 1, 1, 0, 1;
0, 0, 0, -1, -1, 0, 1;
0, 0, 0, 1, 1, 1, 0, 1;
0, 0, 0, 0, 0, -1, -1, 0, 1;
0, 0, 0, 0, 0, 1, 1, 1, 0, 1;
0, 0, 0, 0, 0, 0, 0, -1, -1, 0, 1;
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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