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 A265472 Number of 7Xn 0..7+n-2 arrays with upper left zero and lower right 7+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two. 0

%I #3 Dec 09 2015 10:51:56

%S 16807,448920,226627855,90139418667,40379152013237,15984824483462062,

%T 6109458550119472926,2389935645198640348518,930872824490636727708065,

%U 338013705923361717540139746

%N Number of 7Xn 0..7+n-2 arrays with upper left zero and lower right 7+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.

%C Row 7 of A265466.

%e Some solutions for n=1

%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

%e ..5....0....0....1....2....2....2....6....3....5....1....5....1....6....0....0

%e ..3....3....5....2....4....6....6....2....1....5....4....5....4....4....0....6

%e ..4....0....5....6....5....4....3....4....5....5....5....0....5....5....0....4

%e ..5....4....4....6....2....0....3....6....5....1....1....4....2....2....6....4

%e ..6....1....0....0....3....5....0....2....0....6....0....6....5....5....2....1

%e ..6....6....6....6....6....6....6....6....6....6....6....6....6....6....6....6

%Y Cf. A265466.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 09 2015

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Last modified August 14 15:53 EDT 2024. Contains 375165 sequences. (Running on oeis4.)