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⇱ The On-Line Encyclopedia of Integer Sequences (OEIS)

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Number of 4Xn 0..2 arrays with exactly floor(4Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
#7 by Sean A. Irvine at Fri Oct 03 20:28:21 EDT 2025
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#6 by Sean A. Irvine at Fri Oct 03 20:28:19 EDT 2025
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#5 by Sean A. Irvine at Wed Jul 23 02:38:55 EDT 2025
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#4 by Sean A. Irvine at Wed Jul 23 02:38:52 EDT 2025
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#3 by R. H. Hardin at Fri Feb 22 08:04:04 EST 2013
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#2 by R. H. Hardin at Fri Feb 22 08:04:01 EST 2013
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#1 by R. H. Hardin at Fri Feb 22 07:53:39 EST 2013
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