Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 4500 articles have referenced us, often saying "we would not have discovered this result without the OEIS".
0,2
Binomial transform is A085277.
Table of n, a(n) for n=0..29.
Index entries for linear recurrences with constant coefficients, signature (2,1,-2).
a(n)=16*2^n/3+(-1)^n/6-9/2.
G.f.: (2*x+1)^2 / ( (x-1)*(2*x-1)*(1+x) ). - R. J. Mathar, Nov 20 2014
Sequence in context: A000385 A192756 A004799 * A080275 A061349 A213780
Adjacent sequences: A085275 A085276 A085277 * A085279 A085280 A085281
easy,nonn
Paul Barry, Jun 25 2003
approved