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0, 1, 21, 331, 4641, 61051, 771561, 9487171, 114358881, 1357947691, 15937424601, 185311670611, 2138428376721, 24522712143931, 279749833583241, 3177248169415651, 35949729863572161, 405447028499293771
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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FORMULA
| G.f.: x/((1-10x)(1-11x)).
E.g.f.: e^(11*x)-e^(10*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Jan 14 2009]
a(0)=0, a(n)=11*a(n-1)+10^(n-1). [From Vincenzo Librandi, Feb 09 2011]
a(0)=0, a(1)=1, a(n)=21*a(n-1)-110*a(n-2). [From Vincenzo Librandi, Feb 09 2011]
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MATHEMATICA
| f[n_]:=11^n-10^n; f[Range[0, 40]] (*From Vladimir Joseph Stephan Orlovsky, Feb 14 2011*)
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CROSSREFS
| Sequence in context: A016260 A011810 A091947 * A016191 A095905 A051525
Adjacent sequences: A016192 A016193 A016194 * A016196 A016197 A016198
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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