-2159

Appears in sequences

• (1,1) entry of powers of the orthogonal design shown below.at n=8A090592
• The r-th term of the n-th row of the following array contains the sum of r successively decreasing integers beginning from n. 0 < r <= n. Sequence contains the leading diagonal.at n=16A110427
• Expansion of 1/(1-x*(1-9*x)).at n=7A146078
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 133", based on the 5-celled von Neumann neighborhood.at n=27A270235
• Expansion of Product_{k>=1} 1/(1 + p(k)*x^k), where p(k) = number of partitions of k (A000041).at n=19A316230
• a(n) = 6 * GaussBinomial(2*n, 2, 2) * Bernoulli(2*n, 1).at n=4A346464
• a(n) = n! * Sum_{k=0..floor(n/4)} (-n)^k / (k! * (n-4*k)!).at n=6A362322