A121890 - OEIS

A121890

Least m such that (n mod m) > (n^2 mod m).

3, 4, 5, 3, 4, 4, 3, 5, 4, 3, 7, 7, 3, 4, 9, 3, 4, 4, 3, 8, 4, 3, 5, 7, 3, 4, 8, 3, 4, 4, 3, 7, 4, 3, 8, 8, 3, 4, 7, 3, 4, 4, 3, 7, 4, 3, 7, 5, 3, 4, 7, 3, 4, 4, 3, 9, 4, 3, 7, 7, 3, 4, 5, 3, 4, 4, 3, 5, 4, 3, 11, 7, 3, 4, 7, 3, 4, 4, 3, 7, 4, 3, 5, 8, 3, 4, 7, 3, 4, 4, 3, 8, 4, 3, 7, 7, 3, 4, 8, 3, 4, 4, 3, 9, 4

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OFFSET

2,1

LINKS

Table of n, a(n) for n=2..106.

EXAMPLE

n=100: a(100) = 8 because n=100 == 2 mod 8, n^2=100000 == 0 mod 8 and 8 is the least m such that 100 > 100000 mod m.

MATHEMATICA

s={}; Do[n1=n; n2=n^2; Do[If[Mod[n1, m]>Mod[n2, m], AppendTo[s, {n, n1, n2, m}]; Break[]], {m, 2, 200}], {n, 2, 120}]; Last/@s

CROSSREFS

Sequence in context: A165565 A033706 A354597 * A330740 A178231 A343262

Adjacent sequences: A121887 A121888 A121889 * A121891 A121892 A121893

KEYWORD

nonn

AUTHOR

Zak Seidov, Aug 31 2006

STATUS

approved