1,1

These are the even numbers of A000414 divided by 2.

Table of n, a(n) for n=1..70.

a(n) is one half of the n-th even number of the sequence A000414.

Cf. A000414.

Sequence in context: A228089 A126971 A175354 * A286727 A090946 A299417

Adjacent sequences: A224775 A224776 A224777 * A224779 A224780 A224781

nonn

Wolfdieter Lang, May 09 2013

approved