61469

Properties

Appears in sequences

• Number of ways to partition the sum of all divisors of n (sigma(n), A000203) into distinct positive integers not greater than n.at n=44A079125
• Primes among partial sums of floor(Pi*prime(k)), k=1,2,3,....at n=5A117503
• a(n) = smallest m > 0 such that there are no primes between p*m and p*(m+1) inclusive where p is the n-th prime.at n=32A174741
• Number of partitions of n such that either both floor(n/2) and ceiling(n/2) are parts or else neither is a part.at n=42A238624
• Number of different closest packings of equal spheres for rhombohedral crystals having repeat period n.at n=22A371992
• Prime numbersat n=6182