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A070351 a(n) = 2^n mod 47. 4
1, 2, 4, 8, 16, 32, 17, 34, 21, 42, 37, 27, 7, 14, 28, 9, 18, 36, 25, 3, 6, 12, 24, 1, 2, 4, 8, 16, 32, 17, 34, 21, 42, 37, 27, 7, 14, 28, 9, 18, 36, 25, 3, 6, 12, 24, 1, 2, 4, 8, 16, 32, 17, 34, 21, 42, 37, 27, 7, 14, 28, 9, 18, 36, 25, 3, 6, 12, 24, 1, 2, 4, 8, 16, 32, 17, 34, 21, 42, 37, 27 (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, Feb 06 2011: (Start)

a(n) = a(n-23).

G.f.: (-1-2*x-4*x^2-8*x^3-16*x^4-32*x^5 -17*x^6-34*x^7 -21*x^8-42*x^9 -37*x^10-27*x^11-7*x^12-14*x^13 -28*x^14-9*x^15 -18*x^16-36*x^17 -25*x^18-3*x^19 -6*x^20-12*x^21-24*x^22 ) / ( (x-1)*(1+x+x^2 +x^3+x^4+x^5 +x^6+x^7+x^8 +x^9+x^10+x^11 +x^12+x^13+x^14 +x^15+x^16+x^17 +x^18+x^19+x^20+x^21+x^22) ). (End)

MATHEMATICA

PowerMod[2, Range[0, 50], 47] (* G. C. Greubel, Mar 11 2016 *)

PROG

(PARI) a(n)=lift(Mod(2, 47)^n) \\ Charles R Greathouse IV, Mar 22 2016

(GAP) a:=List([0..100], n->PowerMod(2, n, 47));; Print(a); # Muniru A Asiru, Jan 28 2019

CROSSREFS

Sequence in context: A036128 A073477 A220105 * A070350 A070349 A070348

Adjacent sequences:  A070348 A070349 A070350 * A070352 A070353 A070354

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 12 2002

STATUS

approved

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Last modified October 21 21:25 EDT 2021. Contains 348155 sequences. (Running on oeis4.)