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Search: id:A131912
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OFFSET
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1,2
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FORMULA
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Binomial transform of (1, 6, -1, 2, -4, 8, -16,...).
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EXAMPLE
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a(4) = 18 = sum of row 4 terms, triangle A131911: (8 + 1 + 2 + 7).
a(4) = 18 = (1, 3, 3, 1) dot (1, 6, -1, 2) = (1 + 18 -3, 2).
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CROSSREFS
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Cf. A131911.
Sequence in context: A091573 A092094 A064665 this_sequence A022953 A030714 A061141
Adjacent sequences: A131909 A131910 A131911 this_sequence A131913 A131914 A131915
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KEYWORD
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nonn
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 27 2007
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