51759

Appears in sequences

• a(n)=9*(a(n-1)a(n-3)-a(n-2)^2)/a(n-4), a(1)=a(2)=a(3)=1, a(4)=-9.at n=6A160569
• 1/36 the number of (n+2) X 3 0..2 arrays with each 3 X 3 subblock containing two of one value, two of another, and five of the last.at n=5A184449
• 1/36 the number of (n+2)X8 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last.at n=0A184454
• T(n,k)=1/36 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last.at n=15A184457
• T(n,k)=1/36 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last.at n=20A184457
• T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element 1 greater than its north, west or southeast neighbor modulo n and the upper left element equal to 0.at n=31A267546
• Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north, west or southeast neighbor modulo 4 and the upper left element equal to 0.at n=4A267547
• Expansion of g/(1 - x^3*g^6), where g = 1+x*g^3 is the g.f. of A001764.at n=8A391064