%I A048770
%S A048770 1,8,23,60,149,364,883,2136,5161,12464,30095,72660,175421,423508,
%T A048770 1022443,2468400,5959249,14386904,34733063,83853036,202439141,
%U A048770 488731324,1179901795,2848534920,6876971641,16602478208,40081928063
%N A048770 Partial sums of A048694.
%F A048770 a(n)=2*a(n-1)+a(n-2)+6; a(0)=1, a(1)=8.
%e A048770 a(n)=[ {(7+4*sqrt(2))(1+sqrt(2))^n - (7-4*sqrt(2))(1-sqrt(2))^n}/2*sqrt(2) 
               ]-3.
%Y A048770 Cf. A001333, A000129, A048654, A048655, A048694.
%Y A048770 Sequence in context: A027054 A048467 A002765 this_sequence A055273 A059209 
               A099274
%Y A048770 Adjacent sequences: A048767 A048768 A048769 this_sequence A048771 A048772 
               A048773
%K A048770 easy,nice,nonn
%O A048770 0,2
%A A048770 Barry E. Williams
%E A048770 More terms from James A. Sellers (sellersj(AT)math.psu.edu), Jun 20 2000