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A235255 Number of (n+1) X (5+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1

%I #8 Jun 18 2022 23:51:29

%S 39680,102000,251656,717452,1951752,5990204,17480904,56590772,

%T 174061880,586251132,1878570184,6520782212,21592361736,76732245020,

%U 260994094488,945046085492,3286749223400,12084946706892,42822271489672

%N Number of (n+1) X (5+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

%C Column 5 of A235258.

%H R. H. Hardin, <a href="/A235255/b235255.txt">Table of n, a(n) for n = 1..88</a>

%H R. H. Hardin, <a href="/A235255/a235255.txt">Empirical recurrence of order 58</a>

%F Empirical recurrence of order 58 (see link above).

%e Some solutions for n=2:

%e 1 2 0 1 0 1 1 7 6 7 1 6 6 3 6 0 5 2 6 3 6 3 4 3

%e 7 1 6 0 6 0 2 1 7 1 2 0 1 5 1 2 0 4 3 7 3 7 1 7

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 05 2014

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)