692224

Appears in sequences

• Expansion of (1 + 2*x)/(1 - 2*x)^3.at n=12A014477
• Squares that are a difference between 2 positive cubes.at n=17A038596
• Coefficient triangle of polynomials (falling powers) related to Pell number convolutions. Companion triangle is A058404.at n=28A058405
• Numbers of the form (4^i)*(13^j), with i, j >= 0.at n=33A107462
• Numbers of the form (8^i)*(13^j), with i, j >= 0.at n=23A107764
• a(n) = 4^n*(2n + 1)^2.at n=6A164583
• Numbers with 39 divisors.at n=4A175748
• Number of subsets of the set {1,2,...,n} which do not contain two elements whose difference is 6.at n=25A208743
• a(n) = 2^n*A056236(n).at n=7A228568
• Number of (n+1) X (3+1) arrays of permutations of 0..n*4+3 with each element having index change +-(.,.) 0,0 1,2 or 2,-2.at n=6A264055
• T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having index change +-(.,.) 0,0 1,2 or 2,-2.at n=42A264059
• Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having index change +-(.,.) 0,0 1,2 or 2,-2.at n=2A264064
• Numbers whose prime factors are 2 and 13.at n=38A288162
• a(n) = the smallest number m such that gcd(m, tau(m)) = n where tau(k) = the number of the divisors of k (A000005).at n=12A324553
• a(n) = the smallest number m such that gcd(tau(m), pod(m)) = n where tau(k) = the number of the divisors of k (A000005) and pod(k) = the product of the divisors of k (A007955).at n=12A324555
• a(n) is the determinant of an n X n Hermitian Toeplitz matrix whose first row consists of 1, 2*i, ..., n*i, where i denotes the imaginary unit.at n=24A359559
• E.g.f. satisfies A(x) = exp( x*A(x) * (1 + x^3*A(x)^3) ).at n=7A376565