19296

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 69.at n=34A031567
• Maximum determinant that can be formed from the optimal set of nonnegative 3 X 3 matrix elements <=n, which maximize the number of different determinants given in A099834.at n=25A099815
• a(k) = k! * lim_{n->oo} card({ i*j; i=1..k, j=1..n })/n.at n=6A126959
• Number of 5-way intersections in the interior of a regular 6n-gon.at n=47A137939
• Row sums of triangle A144891 (S1hat(5)).at n=5A144892
• Numbers n with property that n^2 is a sum of some 70 successive primes.at n=29A166256
• Numbers p^5*q^2*r where p, q, r are 3 distinct primes.at n=35A179691
• Number of (w,x,y,z) with all terms in {0,...,n} and (least gapsize)=2.at n=17A212895
• First differences of A219795.at n=35A219865
• Number of groups of order prime(n)^6.at n=20A232106
• Erroneous version of A275518.at n=7A239911
• Number of partitions p of n such that (maximal multiplicity of the parts of p) < (number of distinct parts of p).at n=41A240305
• a(n) = 3*p^2+39*p+344+24*gcd(p-1,3)+11*gcd(p-1,4)+2*gcd(p-1,5), where p = prime(n).at n=20A269749
• Number of simplices in corner-cut triangulation of the n-cube.at n=7A275518
• E.g.f.: sinh(x)/(1+LambertW(-x)).at n=6A277463
• E.g.f. S(x) satisfies: S(x) = Integral (1 + S(x)^2)^3 dx.at n=3A281431
• Coefficients in expansion of -q*E'_2/E_2 where E_2 is the Eisenstein Series (A006352).at n=2A289635
• a(n) = n * (7*binomial(n, 2) + 1).at n=18A329530
• Consider all 3 X 3 matrices M whose entries are the n-th to (n+8)-th primes prime(n), ..., prime(n+8), in any order. a(n) is the sum of the number of M such that det(M) is divisible by prime(n+i), for i from 0 to 8.at n=34A339105
• Row sums of A363154.at n=7A362990