28903

Appears in sequences

• a(n) = floor(10000*log(n)).at n=17A004243
• Number of ways to place two non-attacking kings on all free n-ominoes.at n=8A171010
• Odd numbers which are factored to the same set of primes in Z as to the irreducible polynomials in GF(2)[X]; odd terms of A235036.at n=31A235039
• In base 8: a(n) sets a new record for the number of Reverse and Add! steps needed to reach a palindrome starting with a(n).at n=14A306599
• Semiprimes of the form k^2 + 3.at n=34A360740