5,3
Table of n, a(n) for n=5..11.
a(n) = A169761(n)-n.
a(9) = 9 corresponds to the [18,9,6] extended quadratic residue code.
Sequence in context: A190553 A078671 A119637 * A173407 A113862 A036277
Adjacent sequences: A169759 A169760 A169761 * A169763 A169764 A169765
nonn,more
N. J. A. Sloane, May 08 2010
approved