|
|
A350925
|
|
a(0) = 1, a(1) = 9, and a(n) = 16*a(n-1) - a(n-2) - 4 for n >= 2.
|
|
9
|
|
|
1, 9, 139, 2211, 35233, 561513, 8948971, 142622019, 2273003329, 36225431241, 577333896523, 9201116913123, 146640536713441, 2337047470501929, 37246118991317419, 593600856390576771, 9460367583257910913, 150772280475735997833, 2402896120028518054411
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
COMMENTS
|
One of 10 linear second-order recurrence sequences satisfying (a(n)*a(n-1)-1) * (a(n)*a(n+1)-1) = (a(n)+1)^4 and together forming A350916.
|
|
LINKS
|
|
|
FORMULA
|
G.f.: (1 - 8*x + 3*x^2)/((1 - x)*(1 - 16*x + x^2)). - Stefano Spezia, Jan 22 2022
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|