34918

Appears in sequences

• Euler transform applied three times to partition triangle A008284.at n=62A055886
• Number of polyominoes with n cells that tile the plane by 180-degree rotation (Conway criterion).at n=12A075202
• Number of primitive (aperiodic, or Lyndon) 3-asymmetric rhythm cycles: ones having no nontrivial shift automorphism. 3-asymmetric rhythm cycles (A115115): binary necklaces of length 3n subject to the restriction that for any k if the k-th bead is of color 1 then the (k+n)-th and (k+2n)-th beads (modulo 3n) are of color 0.at n=9A115117
• Series expansion of (eta(q^9) / eta(q))^3 in powers of q.at n=15A121589
• Expansion of (eta(q)eta(q^9)/eta(q^3)^2)^6 in powers of q.at n=15A121592
• Number of alternating polynomials of degree 3n in GF(2)[X], n>0.at n=19A165912
• Composite squarefree numbers n such that p-d(n) divides n-d(n), where p are the prime factors of n and d(n) the number of divisors of n.at n=18A228300
• The number of complete binary trees with bicolored twigs. A twig is a vertex with one child on the boundary and the other child having no descendants.at n=9A228404
• Numbers n such that n!3 - 3^3 is prime, where n!3 = n!!! is a triple factorial number (A007661).at n=28A247463
• Numbers k for which A003973(k) is equal to 2*sigma(k).at n=19A337384