35820

Appears in sequences

• Numbers n such that 299*2^n-1 is prime.at n=15A050908
• Numbers in the cycle-attractors of length=14 of the function f(x)=A063919(x).at n=19A097030
• Heptagonal numbers for which the sum of the digits is also a heptagonal number.at n=30A117650
• Number of strings of numbers x(i=1..5) in 0..n with sum i^3*x(i) equal to 125*n.at n=44A184260
• Expansion of Product_{k>=2} 1/(1 - x^k)^bigomega(k), where bigomega(k) is the number of prime divisors of k counted with multiplicity (A001222).at n=38A293549
• Numbers that are members of unitary sigma aliquot cycles (union of unitary perfect, unitary amicable and unitary sociable numbers).at n=37A327157
• Irregular triangle of cycles of purely periodic unitary sigma aliquot sequences with their smallest member as starting number, read by rows.at n=44A336216
• Number of partitions of n into 10 or more parts.at n=32A347547
• Numbers k such that k +- 2 and k +- 3 are all semiprimes.at n=13A382049