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1, 2, 16, 170, 1696, 15962, 144496, 1273610, 11012416, 93864122, 791266576, 6612607850, 54878189536, 452866803482, 3719823438256, 30436810578890, 248242046141056, 2019169299698042, 16385984911571536, 132716292890482730
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| G.f.: 1/(1-8*x)-1/(1-7*x)+1/(1-x). E.g.f.: e^(8*x)-e^(7*x)+e^x.
a(n)=15*a(n-1)-56*a(n-2)+42 with a(0)=1, a(1)=2 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 21 2010]
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CROSSREFS
| A155638, A155639, A155640, A155641, A155642, A155643, A155644, A155645, A155646, A155647, A155648, A155649, A155650, A155651, A155652, A155653, A155654, A155655, A155656, A155657, A155658
Sequence in context: A011552 A089624 A123555 * A108999 A138014 A206988
Adjacent sequences: A155656 A155657 A155658 * A155660 A155661 A155662
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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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