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Search: id:A016316
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| A016316 |
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Expansion of 1/((1-2x)(1-8x)(1-9x)). |
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+0
6
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| 1, 19, 255, 2975, 32231, 333759, 3353335, 32976175, 319155111, 3051352799, 28893830615, 271497720975, 2535105456391, 23548956856639, 217804673719095, 2007154559579375, 18439691005140071, 168959618797797279
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OFFSET
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0,2
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FORMULA
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a(n) =(9^n - 2^n)/7-(8^n - 2^n)/6, n>=2 . a(n) = A016133-A016131 for 2 to . [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 05 2009]
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EXAMPLE
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if n=4 then 935 - 680 = 255 . [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 05 2009]
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PROGRAM
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(Other) sage: [(9^n - 2^n)/7-(8^n - 2^n)/6 for n in xrange(2, 20)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 05 2009]
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CROSSREFS
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Sequence in context: A009728 A027532 A021394 this_sequence A021154 A016313 A017917
Adjacent sequences: A016313 A016314 A016315 this_sequence A016317 A016318 A016319
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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