0,2

(1/360) [6250*5^n - 9216*4^n + 3645*3^n - 320*2^n + (-1)^n].

First differences are in A004058. Pairwise sums are in A025211.

Sequence in context: A042941 A021344 A119744 this_sequence A087609 A044345 A166573

Adjacent sequences: A099108 A099109 A099110 this_sequence A099112 A099113 A099114

nonn

Ralf Stephan, Sep 28 2004