Many excellent designs for a new banner were submitted. We will use the best of them in rotation.
J. H. Silverman, A Friendly Introduction to Number Theory, pp. 351, Prentice Hall NJ, 2001.
Table of n, a(n) for n=1..20.
a(n)=p for p==3 (mod 4). a(n)=p-+2*A002972(n), sign chosen according as to A002972(n)==-+1 (mod 4), for p==1 (mod 4).
Sequence in context: A080088 A098715 A167886 * A156763 A169653 A129012
Adjacent sequences: A095975 A095976 A095977 * A095979 A095980 A095981
Lekraj Beedassy, Jul 16 2004