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A060039 Triangle T(n,k) = 1 if k-th prime is a square mod the n-th prime, otherwise 0, for 1<=k<n. 1
0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

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

EXAMPLE

0; 0,0; 1,0,0; 0,1,1,0; ...

MATHEMATICA

t[n_, k_] := Boole[ Reduce[ Mod[Prime[k] - j^2, Prime[n]] == 0, j, Integers] =!= False]; Flatten[ Table[ t[n, k], {n, 2, 15}, {k, 1, n - 1}]] (* Jean-Fran├žois Alcover, May 16 2012 *)

CROSSREFS

Cf. A060038.

Sequence in context: A144602 A160351 A023969 * A107078 A163533 A020987

Adjacent sequences:  A060036 A060037 A060038 * A060040 A060041 A060042

KEYWORD

nonn,tabl,easy,nice

AUTHOR

N. J. A. Sloane, Mar 17 2001

EXTENSIONS

More terms from Larry Reeves (larryr(AT)acm.org), Mar 20 2001

STATUS

approved

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Last modified November 18 00:38 EST 2017. Contains 294837 sequences.