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Search: id:A131064
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| A131064 |
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Binomial transform of [1, 1, 5, 5, 5,...]. |
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+0
9
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| 1, 2, 8, 24, 60, 136, 292, 608, 1244, 2520, 5076, 10192, 20428, 40904, 81860, 163776, 327612, 655288, 1310644, 2621360, 5242796, 10485672, 20971428, 41942944, 83885980, 167772056, 335544212, 671088528, 1342177164, 2684354440
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row sums of triangle A131063. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 2007
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FORMULA
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a(n)=5*2^n-4n-4. G.f.=(1-2x+5x^2)/[(1-2x)(1-x)^2]. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 2007
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EXAMPLE
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a(3) = 24 = sum of row 4 terms of A131063: (1 + 11 + 11 + 1).
a(3) = 24 = (1, 3, 3, 1) dot (1, 1, 5, 5).
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MAPLE
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a := proc (n) options operator, arrow; 5*2^n-4*n-4 end proc: seq(a(n), n = 0 .. 30); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 2007
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CROSSREFS
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Cf. A109128, A131060, A131061, A131062, A131063, A131065, A131066.
Sequence in context: A083553 A051745 A006734 this_sequence A075218 A006728 A075216
Adjacent sequences: A131061 A131062 A131063 this_sequence A131065 A131066 A131067
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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), Jun 13 2007
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EXTENSIONS
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Corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 2007
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