2752512

Appears in sequences

• Order of unitary 2^n X 2^n group H_{n,4} acting on Siegel modular forms.at n=3A027639
• Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*8^j.at n=33A038214
• Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*2^j.at n=30A038280
• 19-almost primes (generalization of semiprimes).at n=8A069280
• a(n) = n*2^(n-4).at n=17A079859
• a(0) = a(1) = 1; for n > 1, a(n) = (n+2)*2^(n-2).at n=19A087447
• Pi*denominators of odd raw moments in the distribution of a triangle picked at random from points on the circumference of a unit circle.at n=4A093584
• First differences of A129952.at n=19A129953
• Denominators of coefficient of x^(n+1/2) in the series expansion of the haversine.at n=10A143582
• a(n) = 21*2^n.at n=17A175805
• Determinant of the n X n matrix with (i,j)-entry equal to |p_i-p_j|, where p_k denotes the k-th prime.at n=8A187011
• a(n) = the number of hills (arch length of 1 with no covering arches) for semi-meander solutions with n arches and floor((n+2)/2) arch group returns to the x axis.at n=37A262258
• Triangle read by rows: T(n,k) is the number of k-colored graphs on n nodes with restricted labels, n>=0, 0<=k<=n.at n=32A335330
• Triangle read by rows, T(n, k) = [x^k] p(n), where p(n) = 4^n * hypergeom([1/2, -n - 1, -n], [2, 2], x).at n=38A367022
• a(n) is the first number == 1 (mod n) that is the product of n primes, counted by multiplicity.at n=18A368217