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A231855 T(n,k)=Number of nXk 0..2 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to itself plus one mod 3, with upper left element zero (rock paper and scissors drawn positions) 13

%I #4 Nov 14 2013 13:56:39

%S 1,1,3,3,8,9,8,34,55,27,21,144,656,377,81,55,612,7339,12404,2584,243,

%T 144,2613,85288,360966,234336,17711,729,377,11159,991167,11149456,

%U 17726611,4426924,121393,2187,987,47675,11529929,342945563,1454768048,870478586

%N T(n,k)=Number of nXk 0..2 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to itself plus one mod 3, with upper left element zero (rock paper and scissors drawn positions)

%C Table starts

%C ....1......1..........3.............8...............21..................55

%C ....3......8.........34...........144..............612................2613

%C ....9.....55........656..........7339............85288..............991167

%C ...27....377......12404........360966.........11149456...........342945563

%C ...81...2584.....234336......17726611.......1454768048........118292347982

%C ..243..17711....4426924.....870478586.....189801034186......40798265169064

%C ..729.121393...83630516...42745416641...24762957054535...14071005227913420

%C .2187.832040.1579892344.2099041399895.3230773305296573.4852980371902817445

%H R. H. Hardin, <a href="/A231855/b231855.txt">Table of n, a(n) for n = 1..161</a>

%F Empirical for column k:

%F k=1: a(n) = 3*a(n-1)

%F k=2: a(n) = 7*a(n-1) -a(n-2)

%F k=3: a(n) = 21*a(n-1) -41*a(n-2) +22*a(n-3) for n>4

%F k=4: [order 9] for n>10

%F k=5: [order 21] for n>22

%F k=6: [order 52] for n>54

%F Empirical for row n:

%F n=1: a(n) = 3*a(n-1) -a(n-2) for n>3

%F n=2: [order 8] for n>9

%F n=3: [order 35] for n>39

%e Some solutions for n=3 k=4

%e ..0..0..0..1....0..0..2..1....0..0..0..0....0..0..0..1....0..0..1..0

%e ..0..2..2..2....1..2..1..1....1..1..1..1....0..0..2..2....0..2..0..1

%e ..2..0..0..0....1..1..2..2....1..2..0..0....1..0..0..0....2..2..2..2

%Y Column 1 is A000244(n-1)

%Y Column 2 is A033890(n-1)

%Y Row 1 is A001906(n-1)

%K nonn,tabl

%O 1,3

%A _R. H. Hardin_, Nov 14 2013

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)