OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +34*a(n-2) -34*a(n-3) -490*a(n-4) +490*a(n-5) +3953*a(n-6) -3953*a(n-7) -19806*a(n-8) +19806*a(n-9) +64568*a(n-10) -64568*a(n-11) -139460*a(n-12) +139460*a(n-13) +199324*a(n-14) -199324*a(n-15) -184736*a(n-16) +184736*a(n-17) +105888*a(n-18) -105888*a(n-19) -33888*a(n-20) +33888*a(n-21) +4608*a(n-22) -4608*a(n-23).
EXAMPLE
Some solutions for n=4:
3 4 1 4 3 4 2 3 2 3 2 3 2 3 2 4 2 4 4 2 4 2 4 2
0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 1 0 1 1 0 1 0 1 0
3 4 1 4 1 4 1 4 1 4 3 4 2 3 2 4 2 4 4 2 4 2 4 2
0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 1 0 1 1 0 3 0 3 0
3 4 1 4 1 4 3 4 3 4 3 4 1 4 1 3 1 3 4 2 4 2 4 2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2014
STATUS
approved