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A183840 Number of (n+1)X5 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others 1
251, 2297, 21068, 197133, 1839599, 17250758, 161545837, 1514840541, 14197275248, 133112213345, 1247806255067, 11698539778542, 109669818666945, 1028159727064977, 9638825752325984, 90363621330846069, 847148911741824391 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A183845
LINKS
FORMULA
Empirical: a(n)=13*a(n-1)+10*a(n-2)-617*a(n-3)+1477*a(n-4)+7392*a(n-5)-31514*a(n-6)-7224*a(n-7)+177424*a(n-8)-157720*a(n-9)-335288*a(n-10)+534384*a(n-11)+103824*a(n-12)-482816*a(n-13)+109440*a(n-14)+122368*a(n-15)-40960*a(n-16)
EXAMPLE
Some solutions for 3X5
..0..1..0..0..1....1..0..1..1..0....0..0..0..1..1....1..1..0..1..0
..1..0..1..1..0....0..1..1..0..1....0..0..0..1..0....0..1..1..0..1
..1..0..1..0..1....0..1..0..1..0....1..1..1..0..1....1..0..1..1..0
CROSSREFS
Sequence in context: A054800 A033451 A201793 * A340636 A234929 A218639
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved

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Last modified May 30 19:14 EDT 2024. Contains 372974 sequences. (Running on oeis4.)