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 A221060 Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 nX4 array 2
 8, 172, 3322, 58710, 989020, 16261308, 263988148, 4256750870, 68391745316, 1096704806282, 17568167732952, 281269561878252, 4501843454461912, 72042583248803298, 1152793219615408052, 18445647830197379358 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A221062 LINKS R. H. Hardin, Table of n, a(n) for n = 1..176 FORMULA Empirical: a(n) = 38*a(n-1) -527*a(n-2) +3412*a(n-3) -10701*a(n-4) +15146*a(n-5) -10333*a(n-6) +12220*a(n-7) -16455*a(n-8) +6382*a(n-9) -2097*a(n-10) +1296*a(n-11) for n>14 EXAMPLE Some solutions for n=3 ..0..0..1..1....1..1..0..0....0..1..0..0....0..1..0..0....1..0..1..0 ..1..0..0..1....0..0..0..1....1..1..0..1....1..1..0..0....1..0..1..1 ..1..1..0..1....0..1..0..1....0..1..1..0....0..1..0..0....1..0..1..1 CROSSREFS Sequence in context: A333036 A247729 A333460 * A303285 A061492 A263461 Adjacent sequences:  A221057 A221058 A221059 * A221061 A221062 A221063 KEYWORD nonn AUTHOR R. H. Hardin Dec 31 2012 STATUS approved

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Last modified August 14 13:43 EDT 2022. Contains 356117 sequences. (Running on oeis4.)