28739

Appears in sequences

• Numbers whose base-13 representation has exactly 5 runs.at n=8A043660
• Number of distinct sets of nonnegative integers with perimeter n, as defined in the comments.at n=52A182372
• Indices of primes in the 9th-order Fibonacci number sequence, A127193.at n=25A256498
• Odd semiprimes p*q, such that Stern polynomial B(p*q,x) is a product of B(p,x) and B(q,x).at n=52A391256