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 A070571 a(n) = n^4 mod 28. 0
 0, 1, 16, 25, 4, 9, 8, 21, 8, 9, 4, 25, 16, 1, 0, 1, 16, 25, 4, 9, 8, 21, 8, 9, 4, 25, 16, 1, 0, 1, 16, 25, 4, 9, 8, 21, 8, 9, 4, 25, 16, 1, 0, 1, 16, 25, 4, 9, 8, 21, 8, 9, 4, 25, 16, 1, 0, 1, 16, 25, 4, 9, 8, 21, 8, 9, 4, 25, 16, 1, 0, 1, 16, 25, 4, 9, 8, 21, 8, 9, 4, 25, 16, 1, 0, 1, 16, 25 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..87. Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1). MATHEMATICA Mod[Range[0, 90]^4, 28] (* Harvey P. Dale, Feb 04 2011 *) PROG (Sage) [power_mod(n, 4, 28)for n in range(0, 88)] # - Zerinvary Lajos, Oct 31 2009 (PARI) a(n)=n^4%28 \\ Charles R Greathouse IV, Apr 06 2016 CROSSREFS Sequence in context: A256526 A243914 A226296 * A087622 A170985 A202335 Adjacent sequences: A070568 A070569 A070570 * A070572 A070573 A070574 KEYWORD nonn,easy AUTHOR N. J. A. Sloane, May 13 2002 STATUS approved

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Last modified August 9 11:12 EDT 2024. Contains 375040 sequences. (Running on oeis4.)