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A159852 n^2 mod 60. 9
0, 1, 4, 9, 16, 25, 36, 49, 4, 21, 40, 1, 24, 49, 16, 45, 16, 49, 24, 1, 40, 21, 4, 49, 36, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 36, 49, 4, 21, 40, 1, 24, 49, 16, 45, 16, 49, 24, 1, 40, 21, 4, 49, 36, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 36, 49, 4, 21, 40, 1, 24, 49, 16, 45, 16, 49, 24, 1 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

COMMENTS

Periodic with period 30: a(n+30) = a(n);

a(15*n+k) = a(15*n-k) for k<=15*n;

a(m*n) = a(m)*a(n) mod 60;

A010421 gives the range of this sequence.

CROSSREFS

A070431, A008959, A070435, A070438, A070442, A070452, A000290.

Sequence in context: A070460 A070459 A162496 * A028907 A072595 A169669

Adjacent sequences:  A159849 A159850 A159851 * A159853 A159854 A159855

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 24 2009

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Last modified February 14 13:08 EST 2012. Contains 205623 sequences.