0,2
Table of n, a(n) for n=0..15.
a(n)=(35*12^(n+3)-48*11^(n+3)+28*6^(n+3)-15*4^(n+3))/1680. [Yahia Kahloune, Jun 03 2013]
Sequence in context: A028153 A028105 A028103 * A028098 A028022 A028020
Adjacent sequences: A028141 A028142 A028143 * A028145 A028146 A028147
nonn
N. J. A. Sloane.
approved