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Search: id:A130125
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| 1, 0, 2, 1, 0, 4, 0, 2, 0, 8, 1, 0, 4, 0, 16, 0, 2, 0, 8, 0, 32, 1, 0, 4, 0, 16, 0, 64, 0, 2, 0, 8, 0, 32, 0, 128, 1, 0, 4, 0, 16, 0, 64, 0, 256
(list; table; graph; listen)
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OFFSET
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0,3
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COMMENT
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Row sums = A000975: (1, 2, 5, 10, 21, 42,...).
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FORMULA
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A128174 * A130123 as infinite lower triangular matrices. By columns, (2^k, 0, 2^k, 0,...)
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EXAMPLE
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First few rows of the triangle are:
1;
0, 2;
1, 0, 4;
0, 2, 0, 8;
1, 0, 4, 0, 16;
0, 2, 0, 8, 0, 32;
...
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CROSSREFS
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Cf. A000975, A128174, A130123.
Sequence in context: A117652 A095859 A088850 this_sequence A137336 A115322 A053117
Adjacent sequences: A130122 A130123 A130124 this_sequence A130126 A130127 A130128
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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), May 11 2007
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