|
|
|
|
11, 81, 641, 5121, 40961, 327681, 2621441, 20971521, 167772161, 1342177281, 10737418241, 85899345921, 687194767361, 5497558138881, 43980465111041, 351843720888321, 2814749767106561, 22517998136852481, 180143985094819841
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,1
|
|
LINKS
|
|
|
FORMULA
|
a(n) = 8*a(n-1)-7.
a(n) = 9*a(n-1)-8*a(n-2).
G.f.: (11-18*x)/((1-x)*(1-8*x)).
|
|
PROG
|
(Magma) [10*8^n+1: n in [0..30]];
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|