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 A281060 Number of 5Xn 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. 1
 0, 122, 1492, 3416, 7803, 16875, 32370, 59669, 107693, 191953, 339219, 595824, 1041681, 1814253, 3149435, 5451162, 9409735, 16202663, 27835100, 47716151, 81633286, 139397983, 237621979, 404396106, 687167939, 1165993033, 1975805797 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 5 of A281056. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 6*a(n-1) -12*a(n-2) +5*a(n-3) +12*a(n-4) -12*a(n-5) -3*a(n-6) +6*a(n-7) -a(n-9) for n>18 EXAMPLE Some solutions for n=4 ..0..1..0..1. .0..0..1..0. .0..1..1..0. .0..0..1..1. .0..1..0..1 ..1..0..1..0. .0..0..1..0. .0..0..1..0. .1..0..0..1. .0..0..0..1 ..1..1..0..1. .1..0..1..0. .1..1..1..1. .1..1..1..0. .1..1..0..1 ..0..1..0..0. .1..0..1..0. .0..1..0..0. .1..0..1..0. .0..1..0..1 ..0..1..1..0. .1..0..1..0. .0..1..1..0. .0..1..0..1. .0..0..1..0 CROSSREFS Cf. A281056. Sequence in context: A238033 A275181 A275129 * A274726 A249532 A222991 Adjacent sequences:  A281057 A281058 A281059 * A281061 A281062 A281063 KEYWORD nonn AUTHOR R. H. Hardin, Jan 13 2017 STATUS approved

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Last modified November 26 17:52 EST 2021. Contains 349343 sequences. (Running on oeis4.)