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Search: id:A024482
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| A024482 |
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(1/2)*(C(2n,n) - C(2n-2,n-1)). |
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+0
3
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| 2, 7, 25, 91, 336, 1254, 4719, 17875, 68068, 260338, 999362, 3848222, 14858000, 57500460, 222981435, 866262915, 3370764540, 13135064250, 51250632510, 200205672810, 782920544640, 3064665881940, 12007086477750, 47081501377326
(list; graph; listen)
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OFFSET
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2,1
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FORMULA
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a(n) =A051924/2 - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 16 2007
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MAPLE
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Z:=(1-z-sqrt(1-4*z))/sqrt(1-4*z)/2: Zser:=series(Z, z=0, 32): seq(coeff(Zser, z, n), n=2..25); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 16 2007
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CROSSREFS
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Sequence in context: A052936 A108152 A097613 this_sequence A074605 A108081 A116396
Adjacent sequences: A024479 A024480 A024481 this_sequence A024483 A024484 A024485
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KEYWORD
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nonn
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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