83968

Appears in sequences

• Expansion of q * (psi(q^4) / phi(-q))^2 in powers of q where phi(), psi() are Ramanujan theta functions.at n=15A107035
• Numbers k such that (number of prime factors of k counted with multiplicity) less (number of distinct prime factors of k) = 10.at n=30A195069
• a(n) = 2^(n-2) * prime(n).at n=12A239885
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 461", based on the 5-celled von Neumann neighborhood.at n=16A282370
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 158", based on the 5-celled von Neumann neighborhood.at n=17A286123
• Numbers h such that 2^phi(h) == phi(h) (mod h).at n=24A292544
• Number of subsets of {1..n} such that it is possible to choose a different prime factor of each element.at n=25A370582