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Search: id:A165162
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| A165162 |
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Triangle ,rows with 2p+1 terms; sum of every row is 1,4,9,16, Lyman's denominators. Numerators of odd polynomials. a(n)= 1, (mix n+1 , twice decreasing positive n). See A004736=1,2,1,3,2,1,4,3,2,1 ,hence 1,1,2,1,2,1,3,2,1,3,2,1, . |
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| 1, 2, 1, 1, 3, 2, 1, 2, 1, 4, 3, 2, 1, 3, 2, 1, 5, 4, 3, 2, 1, 4, 3, 2, 1, 6, 5, 4, 3, 2, 1, 5, 4, 3, 2, 1, 7, 6, 5, 4, 3, 2, 1, 6, 5, 4, 3, 2, 1, 8, 7, 6, 5, 4, 3, 2, 1, 7, 6, 5, 4, 3, 2, 1, 9, 8, 7, 6, 5, 4, 3, 2, 1, 8, 7, 6, 5, 4, 3, 2, 1, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 9, 8, 7, 6, 5, 4, 3, 2, 1
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Denominators: 1, 1,2,4, 1,2,3,6,9, 1,2,3,4,8,12,16, . Note 2,4, 3,6,9, 4,8,12,16 in A075362. From a study based on saddle-points quantities. See reference, A057058 (tenth term of TN is -3, not -4), A129326,A128587,A130679.
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REFERENCES
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P. Curtz, Stabilite locale des systemes quadratiques. Ann. sc. Ecole Normale Sup.,1980,293-302.
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CROSSREFS
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Sequence in context: A049286 A079216 A112380 this_sequence A125106 A152538 A141110
Adjacent sequences: A165159 A165160 A165161 this_sequence A165163 A165164 A165165
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KEYWORD
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nonn,uned
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Sep 06 2009
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