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 A234036 T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1 9
 61, 307, 307, 1543, 3059, 1543, 7783, 30263, 30263, 7783, 39331, 300597, 591711, 300597, 39331, 199003, 2990333, 11637549, 11637549, 2990333, 199003, 1007683, 29784763, 229271097, 454996327, 229271097, 29784763, 1007683, 5105107 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .....61......307.......1543.........7783...........39331............199003 ....307.....3059......30263.......300597.........2990333..........29784763 ...1543....30263.....591711.....11637549.......229271097........4522455227 ...7783...300597...11637549....454996327.....17838321119......700485517781 ..39331..2990333..229271097..17838321119...1394283842243...109246451313313 .199003.29784763.4522455227.700485517781.109246451313313.17100147398257787 LINKS R. H. Hardin, Table of n, a(n) for n = 1..220 FORMULA Empirical for column k: k=1: a(n) = 7*a(n-1) -6*a(n-2) -18*a(n-3) -6*a(n-4) k=2: [order 9] k=3: [order 16] k=4: [order 44] k=5: [order 95] EXAMPLE Some solutions for n=2 k=4 ..0..1..1..2..2....1..1..2..1..1....1..2..2..3..2....1..2..2..3..4 ..1..0..1..1..1....1..2..2..1..2....1..2..3..3..3....1..2..2..3..3 ..0..0..1..1..0....2..2..1..2..2....2..2..2..2..3....2..1..2..3..3 CROSSREFS Sequence in context: A142605 A142133 A302730 * A142217 A234029 A142923 Adjacent sequences:  A234033 A234034 A234035 * A234037 A234038 A234039 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 18 2013 STATUS approved

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Last modified April 25 21:06 EDT 2019. Contains 322461 sequences. (Running on oeis4.)