0,2
Table of n, a(n) for n=0..15.
a(n)=(35*12^(n+3)-9*10^(n+4)+63*8^(n+3)-8*3^(n+3))/2520. [Yahia Kahloune, Jun 11 2013]
Sequence in context: A028178 A028153 A028105 * A028144 A028098 A028022
Adjacent sequences: A028100 A028101 A028102 * A028104 A028105 A028106
nonn
N. J. A. Sloane.
approved