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A070470
a(n) = n^2 mod 48.
1
0, 1, 4, 9, 16, 25, 36, 1, 16, 33, 4, 25, 0, 25, 4, 33, 16, 1, 36, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 36, 1, 16, 33, 4, 25, 0, 25, 4, 33, 16, 1, 36, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 36, 1, 16, 33, 4, 25, 0, 25, 4, 33, 16, 1, 36, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 36, 1, 16, 33, 4
OFFSET
0,3
LINKS
Index entries for linear recurrences with constant coefficients, signature (-1, 0, 1, 1, 0, -1, -1, 0, 1, 1, 0, -1, -1, 0, 1, 1, 0, -1, -1, 0, 1, 1).
FORMULA
a(n) = a(n-24). - G. C. Greubel, Mar 26 2016
MATHEMATICA
PowerMod[Range[0, 100], 2, 48] (* G. C. Greubel, Mar 26 2016 *)
PROG
(Magma) [Modexp(n, 2, 48 ): n in [0..100]]; // Vincenzo Librandi, Mar 27 2016
(PARI) a(n)=n^2%48 \\ Charles R Greathouse IV, Apr 06 2016
CROSSREFS
Sequence in context: A331220 A004120 A052118 * A070469 A070468 A070467
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 12 2002
STATUS
approved