2668050

Appears in sequences

• Even terms in A260442 (in A260443).at n=25A277200
• Prime-factorization representation of the prime-th Stern-polynomial: a(n) = A260443(A000040(n)).at n=17A277316
• Numbers k such that A277333(k) is a prime.at n=13A277317
• Prime-factorization representation of irreducible (non-constant) Stern-polynomials B(n,x), listed in the order of increasing index n: a(n) = A260443(A186891(n+1)).at n=19A277318
• Odd bisection of A260443 (the even terms): a(n) = A260443((2*n)+1).at n=30A277324
• Composite numbers k such that sum of proper divisors of k divides 2^k-1.at n=32A278315
• a(n) = least k such that A287620(k) = n.at n=31A287621
• A variant of A322827.at n=41A322825
• Prime-factorization representation of irreducible (non-constant) Stern-polynomials B(m,x), listed in ascending order.at n=15A389912