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Search: id:A131820
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OFFSET
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1,2
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FORMULA
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Binomial transform of (1, 5, 5, 2, 0, 0, 0,...).
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EXAMPLE
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a(4) = 33 = (1, 3, 3, 1) dot (1, 5, 5, 2) = (1 + 15 + 15 + 2).
a(4) = 33 = sum of row 4 terms of triangle A131819: (13 + 9 + 7 + 4).
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CROSSREFS
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Cf. A131819.
Sequence in context: A071857 A099399 A118014 this_sequence A083053 A083046 A098943
Adjacent sequences: A131817 A131818 A131819 this_sequence A131821 A131822 A131823
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KEYWORD
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nonn,more
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 18 2007
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