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Search: id:A128618
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| 1, 0, 1, 1, 0, 1, 0, 1, 0, 3, 1, 0, 2, 0, 5, 0, 1, 0, 3, 0, 8, 1, 0, 2, 0, 5, 0, 13, 0, 1, 0, 3, 0, 8, 0, 21, 1, 0, 2, 0, 5, 0, 13, 0, 34, 0, 1, 0, 3, 0, 8, 0, 21, 0, 55
(list; table; graph; listen)
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OFFSET
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1,10
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COMMENT
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Row sums = A052952: (1, 1, 3, 4, 8, 12, 21, 33,...). A128619 = A127647 * A128174.
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FORMULA
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A128174 * A127647 as infinite lower triangular matrices. By columns, F(k) interspersed with alternate zeros in every column, k=1,2,3,...
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EXAMPLE
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First few rows of the triangle are:
1;
0, 1;
1, 0, 2;
0, 1, 0, 3;
1, 0, 2, 0, 5;
...
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CROSSREFS
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Cf. A128174, A127647, A052952, A000045.
Sequence in context: A103879 A051722 A166408 this_sequence A101548 A117430 A143676
Adjacent sequences: A128615 A128616 A128617 this_sequence A128619 A128620 A128621
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Mar 14 2007
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