1,1
The parity of n is opposite of the parity of the differences.
(* see programming in A075275 *)
Cf. A075275.
Sequence in context: A115025 A075428 A116077 * A011146 A197735 A058625
Adjacent sequences: A074141 A074142 A074143 * A074145 A074146 A074147
nonn
Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 16 2002