OFFSET
0,3
COMMENTS
The sequence is based on A352431.
LINKS
Index entries for linear recurrences with constant coefficients, signature (3,10,-18,-14,20).
FORMULA
G.f.:(1 - 2*x - 2*x^2 + 4*x^3)/(1 - 3*x - 10*x^2 + 18*x^3 + 14*x^4 - 20*x^5).
a(n) = 3*a(n-1) + 10*a(n-2) - 18*a(n-3) - 14*a(n-4) + 20*a(n-5).
EXAMPLE
a(2)=11:
___ ___ ___ ___ ___ ___
| | | | | | | | | |___| |___|
|___| |___| |___| |_|_| |___| |___|
| | | | | |___| | | | | |___|
|___| |_|_| |___| |___| |___| |___|
.
___ ___ ___ ___ ___
|___| | | | |___| |___| | | |
| | |_|_| | | | |___| |_|_|
|___| | | | |_|_| | | | |___|
|___| |_|_| |___| |_|_| |___|
CROSSREFS
KEYWORD
nonn
AUTHOR
Gerhard Kirchner, Mar 17 2022
STATUS
approved