53460

Appears in sequences

• Denominators of expansion of exp x / sin x.at n=9A007451
• Second diagonal of A027446.at n=12A027449
• Number of nonempty subsets of {1,2,...,n} in which exactly 4/5 of the elements are <= n/3.at n=34A048000
• Number of nonempty subsets of {1,2,...,n} in which exactly 4/5 of the elements are <= (n-1)/3.at n=34A048013
• Number of nonempty subsets of {1,2,...,n} in which exactly 4/5 of the elements are <= (n-2)/3.at n=34A048024
• Number of directed multigraphs with loops on 3 nodes with n arcs.at n=14A050927
• Sum of three solutions of the Diophantine equation x^2 - y^2 = z^3.at n=18A085409
• T(n,k) counts the set partitions of n containing k-1 blocks of length 1.at n=49A086659
• Denominators of coefficients in cosh(x) / sin(x) power series.at n=5A097235
• Kekulé numbers for certain benzenoids.at n=7A108680
• Numbers with prime factorization pqr^2s^5.at n=23A190293
• Number of (w,x,y,z) with all terms in {1,...,n} and w>=average{x,y,z}.at n=18A212089
• Principal diagonal of the convolution array A213838.at n=21A213839
• Numbers k such that k mod phi(k) = lambda(k).at n=34A290184
• Numbers k such that k and uphi(k) have the same set of prime divisors, where uphi is the unitary totient function (A047994).at n=29A329859
• a(n) = floor(-(3/2)*a(n-1)), a(1)=-2.at n=25A333588
• Numbers k for which sigma(k - x) + sigma(k + x) = 8*k has at least one nonnegative solution.at n=28A384841