28399

Appears in sequences

• Unsigned row sums of triangle A118407.at n=29A118409
• Number of nontrivial (girth >=5) snarks on 2n nodes.at n=14A130315
• a(n) = a(n-1)+a(n-2)+a(n-3)+2*a(n-4), a(0)=1, a(1)=3, a(2)=7, a(3)=15.at n=14A139806
• Number of n X 1 0..4 arrays with each element equal to the number its horizontal and vertical neighbors less than itself.at n=13A196423
• Number of nondecreasing sequences of n 1..7 integers with no element dividing the sequence sum.at n=22A212867
• E.g.f.: exp( Sum_{n>=1} A000108(n)*x^n/n ), where A000108(n) = binomial(2*n,n)/(n+1) forms the Catalan numbers.at n=6A213507
• Number of n X 2 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.at n=6A266027
• T(n,k)=Number of nXk integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.at n=34A266033
• Number of 7Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.at n=1A266039
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 526", based on the 5-celled von Neumann neighborhood.at n=14A282914
• Triangle read by rows: T(n, k) = numerator(M(n, k)) where M is the inverse matrix of A368846.at n=72A368847