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A250380 Number of length 7+6 0..n arrays with every seven consecutive terms having the maximum of some three terms equal to the minimum of the remaining four terms 1

%I #4 Nov 19 2014 16:40:30

%S 1996,215345,4766064,49559017,328905292,1616234585,6398378176,

%T 21513933681,63654214444,169907055073,416662805744,951728421657,

%U 2046486565228,4177475716681,8149944767744,15279848491873,27655502386188

%N Number of length 7+6 0..n arrays with every seven consecutive terms having the maximum of some three terms equal to the minimum of the remaining four terms

%C Row 7 of A250373

%H R. H. Hardin, <a href="/A250380/b250380.txt">Table of n, a(n) for n = 1..84</a>

%F Empirical: a(n) = (194/1155)*n^11 + (4043/630)*n^10 + 60*n^9 + (467/2)*n^8 + 491*n^7 + (18913/30)*n^6 + (47464/105)*n^5 + (4811/126)*n^4 - (569/5)*n^3 + (1327/15)*n^2 + (17918/165)*n + 1

%e Some solutions for n=1

%e ..1....1....0....1....1....0....0....0....1....0....0....1....0....0....1....0

%e ..1....1....0....1....1....1....0....0....1....1....1....1....0....0....1....0

%e ..1....0....1....1....0....0....0....1....1....1....1....0....0....0....1....0

%e ..1....1....0....1....1....0....0....0....0....0....0....0....1....0....0....1

%e ..1....0....0....1....1....0....0....0....1....0....1....0....1....0....1....0

%e ..1....0....1....1....1....1....0....0....1....0....1....0....0....1....1....0

%e ..0....0....0....1....1....1....0....1....0....1....1....1....0....1....1....1

%e ..0....1....0....1....1....0....0....0....1....0....1....0....0....0....0....0

%e ..1....0....0....0....0....0....0....1....1....1....1....0....0....0....1....1

%e ..1....1....1....0....1....0....0....0....1....0....1....1....0....0....1....0

%e ..1....0....0....1....0....0....0....0....1....0....0....1....0....1....1....1

%e ..1....0....0....1....1....1....0....0....1....1....1....0....1....0....0....0

%e ..1....0....1....1....1....0....1....1....0....0....1....0....1....0....1....0

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 19 2014

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Last modified September 29 18:59 EDT 2023. Contains 365775 sequences. (Running on oeis4.)