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 A070335 a(n) = 2^n mod 23. 4
 1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12, 1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12, 1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12, 1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12, 1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12, 1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12, 1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12, 1, 2, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS G. C. Greubel, Table of n, a(n) for n = 0..1000 FORMULA From R. J. Mathar, Apr 13 2010: (Start) a(n) = a(n-11). G.f.: (1 + 2*x + 4*x^2 + 8*x^3 + 16*x^4 + 9*x^5 + 18*x^6 + 13*x^7 + 3*x^8 + 6*x^9 + 12*x^10)/ ((1-x) * (1 + x + x^2 + x^3 + x^4 + x^5 + x^6 + x^7 + x^8 + x^9 + x^10)). (End) MAPLE A070335 := proc(n)  op(1+(n mod 11), [1, 2, 4, 8, 16, 9, 18, 13, 3, 6, 12]) ; end proc: # R. J. Mathar, Feb 05 2011 MATHEMATICA PowerMod[2, Range[0, 50], 23] (* G. C. Greubel, Mar 13 2016 *) PROG (Sage) [power_mod(2, n, 23) for n in range(0, 80)] # Zerinvary Lajos, Nov 03 2009 (PARI) a(n)=lift(Mod(2, 23)^n) \\ Charles R Greathouse IV, Apr 06 2016 (GAP) a:=List([0..70], n->PowerMod(2, n, 23));; Print(a); # Muniru A Asiru, Jan 26 2019 CROSSREFS Sequence in context: A119318 A082953 A009289 * A277846 A277845 A277858 Adjacent sequences:  A070332 A070333 A070334 * A070336 A070337 A070338 KEYWORD nonn,easy AUTHOR N. J. A. Sloane, May 12 2002 STATUS approved

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Last modified September 22 09:47 EDT 2021. Contains 347606 sequences. (Running on oeis4.)