OFFSET
1,1
COMMENTS
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..200
Reinhardt Euler, The Fibonacci Number of a Grid Graph and a New Class of Integer Sequences, Journal of Integer Sequences, Vol. 8 (2005), Article 05.2.6.
FORMULA
G.f.: x*(13 + 47*x - 37*x^2 - 129*x^3 + 68*x^4 + 49*x^5 - 23*x^6 - 3*x^7 + x^8) / (1 - 4*x - 36*x^2 + 105*x^4 - 15*x^5 - 64*x^6 + 20*x^7 + 4*x^8 - x^9) (conjectured). - Colin Barker, Jun 06 2017
The above conjecture is correct since the order of the recurrence is A089935(5) = 9. - Andrew Howroyd, Dec 24 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
Marc LeBrun, Nov 15 2003
STATUS
approved