88920
domain: N
Appears in sequences
- Numbers k such that sigma(k) - usigma(k) is a square and sets a new record for such squares.at n=31A063840
- Numbers with prime factorization p*q*r*s^2*t^3 (where p, q, r, s, t are distinct primes).at n=25A190111
- Number of (w,x,y,z) with all terms in {1,...,n} and w>=2x and y>3z.at n=39A212522
- Number of nonintersecting (or self-avoiding) knight paths joining opposite corners of an n X n grid.at n=4A212715
- Sum T(n,k) of the k-th entries in all cycles of all permutations of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows.at n=33A285793
- Heinz numbers of integer partitions with the same number of even parts, odd parts, even conjugate parts, and odd conjugate parts.at n=29A350947
- Numbers k such that binomial(k^2,k) == 0 (mod k^3).at n=13A371474