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1, 2, 18, 218, 2466, 26282, 269298, 2685818, 26269506, 253202762, 2413042578, 22791125018, 213710059746, 1992110014442, 18478745943858, 170706760005818, 1571545212141186, 14425381885981322, 132080236787517138
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| G.f.: 1/(1-9*x)-1/(1-8*x)+1/(1-x). E.g.f.: e^(9*x)-e^(8*x)+e^x.
a(n)=17*a(n-1)-72*a(n-2)+56 with a(0)=1, a(1)=2 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 21 2010]
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CROSSREFS
| A155646, A155647, A155648, A155649, A155650, A155651, A155652, A155653, A155654, A155655, A155656, A155657, A155658, A155659, A155660, A155661, A155662, A155663, A155664, A155665
Sequence in context: A121407 A153647 A052726 * A024486 A052635 A168562
Adjacent sequences: A155663 A155664 A155665 * A155667 A155668 A155669
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KEYWORD
| nonn
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AUTHOR
| Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 31 2009
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