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A251369 Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock summing to 1 2 3 4 5 6 or 7 1
53769, 12002283, 2676962017, 597108952883, 133187012365193, 29707797738391051, 6626420822196876929, 1478044705717848217587, 329682676296148787924297, 73536792652326563411377515 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A251373
LINKS
FORMULA
Empirical: a(n) = 200*a(n-1) +5284*a(n-2) -29042*a(n-3) -605899*a(n-4) +5424778*a(n-5) -14965624*a(n-6) +12176608*a(n-7) +6786256*a(n-8) -7898208*a(n-9) -2471040*a(n-10)
EXAMPLE
Some solutions for n=1
..0..2..2..0..1....1..0..2..1..1....1..2..2..0..1....2..2..1..1..0
..1..1..0..2..1....1..2..0..2..1....2..1..2..0..2....0..2..2..0..0
CROSSREFS
Sequence in context: A186199 A206314 A237373 * A252035 A099231 A237547
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 01 2014
STATUS
approved

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Last modified February 21 07:47 EST 2024. Contains 370219 sequences. (Running on oeis4.)