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1, 9, 97, 993, 9985, 99969, 999937, 9999873, 99999745, 999999489, 9999998977, 99999997953, 999999995905, 9999999991809, 99999999983617, 999999999967233, 9999999999934465, 99999999999868929, 999999999999737857
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (13,-32,20).
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FORMULA
| G.f.: 1/(1-10*x)-1/(1-2*x)+1/(1-x). E.g.f.: e^(10*x)-e^(2*x)+e^x.
a(n)=12*a(n-1)-20*a(n-2)+9 with a(0)=1, a(1)=9 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 21 2010]
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CROSSREFS
| Cf. A074501, A020515, A155588, A155590, A155592, A155593, A155594, A155596, A155597, A155598, A155599, A155600.
Sequence in context: A069636 A069621 A155699 * A180675 A083077 A194725
Adjacent sequences: A155598 A155599 A155600 * A155602 A155603 A155604
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KEYWORD
| nonn,easy
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AUTHOR
| Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 25 2009
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