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A165154
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a(n)=100*a(n-1) +/- 9^(n-1) with a(0)=0
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4
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1, 91, 9181, 917371, 91743661, 9174307051, 917431236541, 91743118871131, 9174311930159821, 917431192628561611, 91743119266342945501
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Starting with addition: 0*100+9^0=1 ; 1*100-9^1=91 ; 91*100+9^2
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 1..100
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FORMULA
| a(n)=(1/109)*(100^n-(-9)^n), with n>=1 [From Paolo P. Lava (paoloplava(AT)gmail.com), Dec 03 2009]
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PROG
| (MAGMA) [(1/109)*(100^n-(-9)^n): n in [1..20]]; // Vincenzo Librandi, Jun 10 2011
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CROSSREFS
| Cf. A164913, A021113
Sequence in context: A054216 A109627 A095372 * A015261 A168624 A131442
Adjacent sequences: A165151 A165152 A165153 * A165155 A165156 A165157
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KEYWORD
| nonn,less
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AUTHOR
| M. Dols (markdols99(AT)yahoo.com), Sep 05 2009
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EXTENSIONS
| More terms from Vincenzo Librandi, Jun 10 2011
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