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A234108 Number of (n+1)X(2+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 12 1
186, 608, 2086, 7742, 29278, 113666, 446590, 1777146, 7128062, 28800050, 116956694, 477079450, 1952467246, 8013263810, 32960180670, 135831293266, 560640193430, 2317207177362, 9588529183750, 39718769341930, 164680552349318 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A234114

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 8*a(n-1) +6*a(n-2) -172*a(n-3) +144*a(n-4) +1438*a(n-5) -1805*a(n-6) -6160*a(n-7) +8467*a(n-8) +14464*a(n-9) -20123*a(n-10) -17822*a(n-11) +25464*a(n-12) +9216*a(n-13) -15948*a(n-14) +136*a(n-15) +3552*a(n-16) -928*a(n-17) +64*a(n-18)

EXAMPLE

Some solutions for n=5

..4..0..4....0..0..0....3..0..3....4..1..4....4..1..4....1..4..1....3..0..4

..1..1..1....3..3..3....4..3..0....1..4..1....4..1..0....1..0..1....3..4..4

..4..0..4....0..0..0....3..0..3....0..1..0....4..1..4....4..1..4....3..0..4

..3..3..3....4..0..4....3..4..3....1..4..1....4..1..0....0..1..4....3..0..0

..4..0..4....0..0..0....3..0..3....0..1..4....1..4..1....1..4..1....3..0..4

..2..2..2....3..3..3....0..3..4....1..4..1....1..4..1....1..0..1....4..3..3

CROSSREFS

Sequence in context: A151701 A258276 A286006 * A200199 A251499 A251492

Adjacent sequences:  A234105 A234106 A234107 * A234109 A234110 A234111

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2013

STATUS

approved

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Last modified August 4 08:25 EDT 2020. Contains 336201 sequences. (Running on oeis4.)