A088200 - OEIS

A088200

Members of the difference sequence (A088197) of LQnR(p_n) (A088196) where it is <= 0.

-2, -2, -4, -2, -2, -4, -2, -4, -2, 0, -4, -4, -4, -2, -4, -2, -2, -10, -2, -4, 0, -4, -4, -8, -10, -2, -4, 0, -4, -2, -4, -4, -4, -2, -4, 0, -4, -6, -4, 0, -8, -4, -2, -2, 0, -4, -4, -4, -10, -2, -14, -2, 0, 0, -6, -4, -4, 0, -10, -2, 0, -4, -10, -4, -2, 0, -4, -2, -2, -6, -2, -4, 0, -2, -4, -4, -10, -8, -2, 0, 0, -8, -4, -8, -4, 0, -2

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OFFSET

1,1

COMMENTS

The members of the sequence are always even (conjectured!).

LINKS

Table of n, a(n) for n=1..87.

PROG

(PARI) qnrp_d_nm(n)= {/* The difference sequence of LQnR where the sequence of the largest QnR modulo the primes is nonmonotonic */ local(k=1, m, p, fl, jj, j, v=[]); for(i=2, n, m=0; p=prime(i); jj=0; fl=2^p-1; j=2; while((j<=(p-1)/2), jj=(j^2)%p; fl-=2^jj; j++); j=p-1; while(m==0, if(bitand(2^j, fl), m=j); j--); if(m-k<=0, v=concat(v, m-k)); k=m); print(v)}

CROSSREFS

Cf. A088194, A088196, A088197, A088198, A088199, A088201.

Sequence in context: A327892 A339377 A278266 * A073103 A247257 A069177

Adjacent sequences: A088197 A088198 A088199 * A088201 A088202 A088203

KEYWORD

sign

AUTHOR

Ferenc Adorjan (fadorjan(AT)freemail.hu), Sep 23 2003

STATUS

approved