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 A234867 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with each 3X3 subblock having the sum of its 72 absolute element differences equal to 52, and no adjacent elements equal 6
 2216, 11714, 11714, 61954, 56100, 61954, 326786, 272878, 272878, 326786, 1791552, 1375612, 1241772, 1375612, 1791552, 9897540, 7418922, 6113796, 6113796, 7418922, 9897540, 54119058, 41004436, 33431812, 29472954, 33431812, 41004436, 54119058 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......2216......11714......61954.....326786....1791552....9897540....54119058 ......11714......56100.....272878....1375612....7418922...41004436...226557788 ......61954.....272878....1241772....6113796...33431812..192846644..1129155378 .....326786....1375612....6113796...29472954..161033032..950535104..5625963918 ....1791552....7418922...33431812..161033032..896839320.5592546520.34471724096 ....9897540...41004436..192846644..950535104.5592546520 ...54119058..226557788.1129155378.5625963918 ..297874488.1275430856.6882784048 .1655842138.7323656914 .9105854856 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 FORMULA Empirical for column k: k=1: [linear recurrence of order 70] for n>71 EXAMPLE Some solutions for n=2 k=4 ..0..1..3..0..1..0....0..2..0..3..2..3....0..2..3..1..2..3....0..1..3..1..3..1 ..2..0..2..1..3..2....2..0..1..2..1..0....2..3..1..0..3..0....2..3..1..2..0..3 ..1..3..0..2..0..3....3..1..3..0..3..1....1..0..3..2..0..2....1..0..3..0..2..0 ..0..1..3..0..2..0....0..2..0..3..1..3....0..3..2..1..3..1....0..2..0..1..3..1 CROSSREFS Sequence in context: A337160 A138079 A183831 * A234862 A245949 A223159 Adjacent sequences: A234864 A234865 A234866 * A234868 A234869 A234870 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 01 2014 STATUS approved

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Last modified August 8 16:21 EDT 2024. Contains 375023 sequences. (Running on oeis4.)