%I A048771
%S A048771 1,9,26,68,169,413,1002,2424,5857,14145,34154,82460,199081,480629,
%T A048771 1160346,2801328,6763009,16327353,39417722,95162804,229743337,
%U A048771 554649485,1339042314
%N A048771 Partial sums of A048695.
%F A048771 a(n)=2*a(n-1)+a(n-1)+7; a(0)=1, a(1)=9.
%e A048771 a(n)=[ {(8+(9/2)*sqrt(2))(1+sqrt(2))^n -(8-(9/2)*sqrt(2))(1-sqrt(2))^n}/ 
               2*sqrt(2) ]-7/2.
%Y A048771 Cf. A001333, A000129, A048694, A048695.
%Y A048771 Sequence in context: A154560 A052153 A048468 this_sequence A055849 A084813 
               A056409
%Y A048771 Adjacent sequences: A048768 A048769 A048770 this_sequence A048772 A048773 
               A048774
%K A048771 easy,nice,nonn
%O A048771 0,2
%A A048771 Barry E. Williams