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1, 8, 44, 242, 1376, 8018, 47384, 282122, 1686176, 10097378, 60525224, 362974202, 2177313776, 13062288338, 78368947064, 470199333482, 2821152954176, 16926788584898, 101560344088904, 609360902271962, 3656161926847376
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| G.f.: 1/(1-6*x)+1/(1-3*x)-1/(1-x). E.g.f.: e^(6*x)+e^(3*x)-e^x.
a(n)=9*a(n-1)-18*a(n-2)-10 with a(0)=1, a(1)=8 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 21 2010]
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CROSSREFS
| A074501, A020515, A155588, A155590, A155592, A155593, A155594, A155596, A155597, A155598, A155599, A155600, A155601, A155602, A155603
Sequence in context: A198768 A082762 A147828 * A126476 A112908 A028565
Adjacent sequences: A155601 A155602 A155603 * A155605 A155606 A155607
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KEYWORD
| nonn
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AUTHOR
| Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 25 2009
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