A183841 Number of (n+1)X6 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others

717, 9747, 132152, 1839599, 25468475, 355075734, 4937888557, 68813532021, 958037081176, 13347035945673, 185880082377841, 2589283005758406, 36063771414713729, 502338630109805537, 6996850074625505590

Offset

1,1

Comments

Column 5 of A183845

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Formula

Empirical: a(n)=22*a(n-1)+6*a(n-2)-2880*a(n-3)+13798*a(n-4)+110000*a(n-5)-930929*a(n-6)-756970*a(n-7)+22953106*a(n-8)-29951536*a(n-9)-275622306*a(n-10)+719843122*a(n-11)+1667030114*a(n-12)-7150472568*a(n-13)-3550504371*a(n-14)+39002379500*a(n-15)-14571682432*a(n-16)-122689648382*a(n-17)+115945427436*a(n-18)+213841845768*a(n-19)-321233080121*a(n-20)-170960293504*a(n-21)+449689611792*a(n-22)-2398234560*a(n-23)-328027764736*a(n-24)+92814224768*a(n-25)+116279246592*a(n-26)-52763484800*a(n-27)-16165644288*a(n-28)+10015540736*a(n-29)+268849152*a(n-30)-446828544*a(n-31)

Example

Some solutions for 3X6
..0..0..1..1..0..1....1..0..1..0..1..1....1..1..1..0..0..0....1..0..0..1..0..1
..1..1..1..0..1..0....0..1..0..1..0..1....1..0..1..1..1..1....1..0..0..1..1..1
..1..0..1..1..1..0....0..1..1..0..1..1....0..1..0..0..0..1....0..1..1..1..0..0

Crossrefs

Sequence in context: A252467 A233629 A151631 * A332171 A220724 A034587

Adjacent sequences: A183838 A183839 A183840 * A183842 A183843 A183844

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved