27075

Appears in sequences

• Expansion of Product_{k>=1} (1+x^k)^A001055(k).at n=42A066806
• Integers k such that nextprime(k^5) - prevprime(k^5) = 4.at n=25A090123
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w<x+y.at n=37A182260
• Numbers whose sum of triangular divisors is also a divisor and greater than 1.at n=36A209311
• Numbers n for which number of iterations to reach the largest equals number of iterations to reach 1 from the largest in Collatz (3x+1) trajectory of n.at n=27A224303
• Odd numbers n for which the number of iterations to reach the largest equals number of iterations to reach 1 from the largest in Collatz (3x+1) trajectory of n.at n=12A224533
• 3*h^2, where h is an odd integer not divisible by 3.at n=31A229852
• The sum of the totatives of n is a perfect cube.at n=34A237282
• Numbers n such that sigma(Rev(phi(n))) = phi(Rev(sigma(n))), where sigma is the sum of divisors and phi the Euler totient function.at n=9A252255
• Numbers that are the sum of three squares in arithmetic progression.at n=39A292313
• The position of the first occurrence of n in A347249.at n=9A347375
• Number of partitions of n in which exactly one even part is repeated and odd parts are unrestricted.at n=41A353902