|
| |
| |
|
|
|
1, 17, 51, 449, 1853, 12853, 61557, 382024, 1971559, 11585969, 62088471, 355111613, 1939427729, 10943439733, 60338602299, 338172377293, 1873494595072, 10464657396101, 58113694771149, 324052035315389
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
Table of n, a(n) for n=1..20.
James A. Sellers, Domino Tilings and Products of Fibonacci and Pell Numbers, Journal of Integer Sequences, Vol. 5 (2002), Article 02.1.2
Index to sequences with linear recurrences with constant coefficients, signature (1,25,11,-47,-11,25,-1,-1).
|
|
|
FORMULA
|
a(n) = a(n-1)+25a(n-2)+11a(n-3)-47a(n-4)-11a(n-5)+25a(n-6)-a(n-7)-a(n-8).
G.f.: -x*(x^7+x^6-24*x^5+11*x^4+38*x^3-9*x^2-16*x-1)/(x^8+x^7-25*x^6+11*x^5+47*x^4-11*x^3-25*x^2-x+1). [Colin Barker, Jun 22 2012]
|
|
|
CROSSREFS
|
Cf. A028470, A000045.
Sequence in context: A214660 A223906 A146673 * A041560 A195666 A041562
Adjacent sequences: A078754 A078755 A078756 * A078758 A078759 A078760
|
|
|
KEYWORD
|
easy,nonn
|
|
|
AUTHOR
|
Michael David Hirschhorn, Jan 08 2003
|
|
|
STATUS
|
approved
|
| |
|
|
