1,4
Table of n, a(n) for n=1..15.
a[ 2n ] = 3 a[ 2n-1 ] - a[ n ] - a[ n+1 ] for n >= 3; a[ 2n-1 ] = 3 a[ 2n-2 ] + 3 a[ n ] for n >= 3
Sequence in context: A263591 A218779 A241066 * A150028 A147730 A147729
Adjacent sequences: A045693 A045694 A045695 * A045697 A045698 A045699
nonn
TORSTEN.SILLKE(AT)LHSYSTEMS.COM
approved