5,1

Table of n, a(n) for n=5..9.

For example, a(5) does not count the permutation (0,4,1,3,2) since 4,1,3 is an arithmetic progression of 2 mod(5).

Cf. A165960, A174072, A174074, A174075.

Sequence in context: A250700 A250846 A172518 * A231759 A231046 A250707

Adjacent sequences: A174070 A174071 A174072 * A174074 A174075 A174076

nonn

Isaac Lambert, Mar 06 2010

approved