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A265598 Number of nX5 0..n*5-1 arrays with upper left zero and lower right n*5-1 and each element differing from its horizontal, vertical and antidiagonal neighbors by a power of two. 1

%I #4 Dec 10 2015 08:23:44

%S 16,166,2228,35824,11746590,19502116,7124418191,64498108909,

%T 19456105428825,61995422081770,37051328002089812,79092190197776702,

%U 101539868925153509615,573558583072379539227,99329072096736307198602

%N Number of nX5 0..n*5-1 arrays with upper left zero and lower right n*5-1 and each element differing from its horizontal, vertical and antidiagonal neighbors by a power of two.

%C Column 5 of A265601.

%H R. H. Hardin, <a href="/A265598/b265598.txt">Table of n, a(n) for n = 1..58</a>

%e Some solutions for n=4

%e ..0..4..5..3..7....0..4..5..3..1....0..4..8.12.16....0.16..8.12.10

%e ..2..3..7.11.15....2..3..7..5..9....2..6.10.14.15....8.12.10.11..9

%e ..1..5..3..7.11....1..5..6..7.11...10..8.12.16.17...10..8..9.13.17

%e ..9..7.11..3.19....3..4..5..3.19....6.10.14.18.19....6.10.11.15.19

%Y Cf. A265601.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 10 2015

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)