OFFSET
0,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (4,94,-260,-3104,6922,48854, -94118,-411428,687376, 1991983,-2792826,-5747356, 6404184,9882208,-8117120, -9774592,5218304,5062656, -1310720,-1048576).
FORMULA
Empirical: a(n)=4*a(n-1)+94*a(n-2)-260*a(n-3)-3104*a(n-4)+6922*a(n-5)+48854*a(n-6)-94118*a(n-7)-411428*a(n-8)+687376*a(n-9)+1991983*a(n-10)-2792826*a(n-11)-5747356*a(n-12)+6404184*a(n-13)+9882208*a(n-14)-8117120*a(n-15)-9774592*a(n-16)+5218304*a(n-17)+5062656*a(n-18)-1310720*a(n-19)-1048576*a(n-20).
The above recurrence is correct. See A183782 for bounds on the order of the recurrence. - Andrew Howroyd, Jan 09 2025
EXAMPLE
Some solutions with a(1,1)=0 for 3X6
..0..0..1..0..0..0....0..0..0..1..0..1....0..0..1..0..0..0....0..0..1..0..1..0
..0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..1....1..0..0..0..0..0
..0..0..1..0..1..0....1..0..1..0..0..1....0..0..0..0..1..1....1..1..0..0..0..1
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. H. Hardin, Jan 07 2011
EXTENSIONS
a(0) prepended by Andrew Howroyd, Jan 09 2025
STATUS
approved