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Search: id:A130888
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| A130888 |
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Triangle read by rows, A051731(n,k) dot (1, 3, 7, 15,...) with like numbers of terms. |
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1
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| 1, 1, 3, 1, 0, 7, 1, 3, 0, 15, 1, 0, 0, 0, 31, 1, 3, 7, 0, 0, 63, 1, 0, 0, 0, 0, 0, 127, 1, 3, 0, 15, 0, 0, 0, 255
(list; table; graph; listen)
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OFFSET
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1,3
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COMMENT
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Row sums = A130887: (1, 4, 8, 19, 32, 74, 128, 274, 519, 1058,...).
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FORMULA
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Triangle read by rows, dot product of each row of A051731 and the same number of terms in the series (1, 3, 7, 15,...).
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EXAMPLE
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First few rows of the triangle are:
1;
1, 3;
1, 0, 7;
1, 3, 0, 15;
1, 0, 0, 0, 31;
1, 3, 7, 0, 0, 63;
...
Row 4 = (1, 3, 0, 15) = (1, 1, 0, 1) dot (1, 3, 7, 15); where (1, 1, 0, 1) = row 4 of A051731.
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CROSSREFS
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Cf. A051731, A130887.
Sequence in context: A058152 A058140 A074678 this_sequence A010601 A110504 A111246
Adjacent sequences: A130885 A130886 A130887 this_sequence A130889 A130890 A130891
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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), Jun 07 2007
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