1,2

For n>4 it appears that a(n)=4a(n-1)+4.

Sequence in context: A030924 A030831 A058767 this_sequence A020106 A099928 A000568

Adjacent sequences: A075873 A075874 A075875 this_sequence A075877 A075878 A075879

nonn

John W. Layman (layman(AT)math.vt.edu), Oct 16 2002