1,2

Essentially the same as A100317.

Table of n, a(n) for n=1..60.

Sequence in context: A076639 A100319 A167692 * A163628 A060864 A087695

Adjacent sequences: A171686 A171687 A171688 * A171690 A171691 A171692

nonn,easy,less

Juri-Stepan Gerasimov, Dec 15 2009

Comment from Charles R Greathouse IV, Mar 25 2010

approved