88473

Appears in sequences

• Expansion of 1/((1-x)(1-5x)(1-9x)(1-11x)).at n=4A023540
• Expansion of 1/((1-2x)(1-7x)(1-8x)(1-10x)).at n=4A028006
• Nonprime numbers n such that the GCD of n and the Chowla's function of n (A048050) is >= n/3.at n=6A066924
• Largest difference between consecutive divisors of n is equal to the sum of divisors of n except 1 and n.at n=3A074844
• (24n - 1)p(n): traces of partition class polynomials, with a(0) = -1.at n=16A183011
• Floor(1/{(5+n^4)^(1/4)}), where {}=fractional part.at n=47A184629
• 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=29A224533
• Number of length n+3 0..5 arrays with no four elements in a row with pattern abba (with a!=b) and new values 0..5 introduced in 0..5 order.at n=6A243386
• Composite numbers for which the harmonic mean of proper divisors is an integer.at n=1A247077
• Numbers for which the harmonic mean of nontrivial divisors is an integer and which are not a square of prime numbers.at n=8A247079
• The largest nontrivial divisor of n equals the sum of the other nontrivial divisors of n.at n=5A333079
• Numbers for which the harmonic mean of the nontrivial unitary divisors is an integer.at n=14A335269
• Numbers that are not powers of primes (A024619) whose harmonic mean of their proper unitary divisors is an integer.at n=3A335270
• Nonexponential harmonic numbers: numbers k that are not prime powers such that the harmonic mean of the nonexponential divisors of k is an integer.at n=5A349178