251160
domain: N
Appears in sequences
- Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n-4)/2.at n=23A048067
- a(n) = Sum_{k=1..(p-1)*(p-2)} floor((k*p)^(1/3)) where p is the n-th prime.at n=19A078838
- Numbers that can be expressed as the difference of the squares of primes in exactly eleven distinct ways.at n=13A092007
- Numbers with prime factorization p*q*r*s*t*u^3 (where p, q, r, s, t, u are distinct primes).at n=6A190378
- Number of 5Xn 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=7A209652
- Numbers n such that the multiplicative group modulo n is the direct product of 7 cyclic groups.at n=7A272597
- Numbers whose infinitary divisors have a mean infinitary abundancy index that is larger than 2.at n=29A374788