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Search: id:A116952
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| A116952 |
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a(n) = 3*a(n-1) + 5 with a(0) = 1. |
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+0
4
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| 1, 8, 29, 92, 281, 848, 2549, 7652, 22961, 68888, 206669, 620012, 1860041, 5580128, 16740389, 50221172, 150663521, 451990568, 1355971709, 4067915132, 12203745401, 36611236208, 109833708629, 329501125892, 988503377681
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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a(n)=(7/2)3^n-(5/2). (Deutsch)
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EXAMPLE
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The second term is 8 since a(1) = 3*a(0) + 5 = 3*1 + 5 = 8.
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MAPLE
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a:=n->(7*3^n-5)/2: seq(a(n), n=0..27);
a[0]:=1: for n from 1 to 27 do a[n]:=3*a[n-1]+5 od: seq(a[n], n=0..27);
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MATHEMATICA
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a[0] := 1; a[n_] := 3a[n - 1] + 5; Table[a[n], {n, 0, 30}]
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CROSSREFS
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Adjacent sequences: A116949 A116950 A116951 this_sequence A116953 A116954 A116955
Sequence in context: A131438 A048478 A001360 this_sequence A088131 A072264 A110527
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Mar 29 2006
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu) and Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 01 2006
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