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 A233733 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6 and no adjacent elements equal 10
 40, 148, 148, 556, 756, 556, 2104, 3972, 3972, 2104, 7976, 21432, 29816, 21432, 7976, 30260, 115972, 233432, 233432, 115972, 30260, 114820, 631628, 1851404, 2723072, 1851404, 631628, 114820, 435720, 3435216, 14802604, 32240288, 32240288 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ......40.......148.........556..........2104.............7976 .....148.......756........3972.........21432...........115972 .....556......3972.......29816........233432..........1851404 ....2104.....21432......233432.......2723072.........32240288 ....7976....115972.....1851404......32240288........578163016 ...30260....631628....14802604.....389230764......10577526052 ..114820...3435216...118695412....4696134192.....195088215888 ..435720..18733728...953471940...57174669348....3616933627344 .1653488.102007004..7663964828..693181060760...67204709367712 .6274804.556289404.61629254552.8455863542400.1250516988640176 LINKS R. H. Hardin, Table of n, a(n) for n = 1..220 FORMULA Empirical for column k: k=1: a(n) = 3*a(n-1) +5*a(n-2) -7*a(n-3) -2*a(n-4) k=2: [order 12] k=3: [order 28] k=4: [order 84] EXAMPLE Some solutions for n=3 k=4 ..2..3..2..3..2....0..2..0..2..0....0..1..0..1..2....0..2..0..1..0 ..0..1..3..1..3....1..0..1..0..1....1..3..1..3..1....2..3..2..3..1 ..2..0..2..0..1....3..1..3..2..0....0..2..0..2..3....3..1..3..1..0 ..3..2..1..2..0....1..0..1..0..1....2..3..2..1..0....1..0..2..0..2 CROSSREFS Sequence in context: A044372 A044753 A160148 * A233726 A100766 A189541 Adjacent sequences: A233730 A233731 A233732 * A233734 A233735 A233736 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 15 2013 STATUS approved

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Last modified August 9 08:03 EDT 2024. Contains 375034 sequences. (Running on oeis4.)