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Search: id:A133546
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| A133546 |
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Binomial transform of [1,3,5,6,7,8,9,10,11,...] (i.e. positive integers except 2 and 4). |
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+0
2
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| 1, 4, 12, 31, 74, 169, 376, 823, 1782, 3829, 8180, 17395, 36850, 77809, 163824, 344047, 720878, 1507309, 3145708, 6553579, 13631466, 28311529, 58720232, 121634791, 251658214, 520093669, 1073741796, 2214592483, 4563402722
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums of triangle A133545.
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FORMULA
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G.f.: ((1-2*x+x^2-x^3)/((x-1)^2*(2*x-1)^2))
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EXAMPLE
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a(3)=12=sum of row 3 terms of triangle A133545:(6+5+1).
a(4)=31=(1,3,3,1) dot (1,3,5,6)=(1+9+15+6).
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CROSSREFS
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Cf. A133545.
Sequence in context: A027658 A001982 A129707 this_sequence A152527 A005104 A028921
Adjacent sequences: A133543 A133544 A133545 this_sequence A133547 A133548 A133549
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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), Sep 15 2007
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EXTENSIONS
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Extended, edited and formula added by Olivier Gerard (olivier.gerard(AT)gmail.com), Oct 12 2007
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