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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; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| Row sums = A000975: (1, 2, 5, 10, 21, 42,...).
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FORMULA
| A128174 * A130123 as infinite lower triangular matrices. By columns, (2^k, 0, 2^k, 0,...)
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EXAMPLE
| 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
| Cf. A000975, A128174, A130123.
Sequence in context: A088850 A185964 A143424 * A137336 A115322 A053117
Adjacent sequences: A130122 A130123 A130124 * A130126 A130127 A130128
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), May 11 2007
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