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A014393 Final 2 digits of 9^n. 1
1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for sequences related to final digits of numbers

MATHEMATICA

Flatten[Prepend[FromDigits[Take[IntegerDigits[#], -2]]&/@(9^Range[2, 60]), {1, 9}]] (* Harvey P. Dale, Jan 22 2011 *)

PowerMod[9, Range[0, 80], 100] (* Vincenzo Librandi, Aug 16 2016 *)

PROG

(MAGMA) [Modexp(9, n, 100): n in [0..110]]; // Vincenzo Librandi, Aug 16 2016

(PARI) a(n) = lift(Mod(9, 100)^n); \\ Michel Marcus, Aug 16 2016

CROSSREFS

Sequence in context: A219664 A107346 A209280 * A008463 A203656 A043087

Adjacent sequences:  A014390 A014391 A014392 * A014394 A014395 A014396

KEYWORD

nonn,base,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 17 10:43 EDT 2017. Contains 293469 sequences.