42671

Appears in sequences

• Number of arrays of median of three adjacent elements of some length-5 0..n array, with no adjacent equal elements in the latter.at n=33A229013
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=57A302889
• Number of 3Xn 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=8A302890
• a(n) is the smallest composite k such that k divides 2^(k*n-1) - 1.at n=5A317556
• Coefficients related to the asymptotics of generalized Delannoy numbers.at n=5A341476
• E.g.f. A(x) satisfies A(x) = exp( -x*A(x) * A(-x*A(x)) ).at n=7A384760
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384760.at n=43A384761