581981400

Appears in sequences

• The first right hand column of the Zeta and Lambda triangles.at n=9A160476
• Triangle read by rows: T(n,k) is the numerator of R(n,k) defined implicitly by the identity Sum_{i=0..l-1} Sum_{j=0..m} R(m,j)*(l-i)^j*i^j = l^(2*m+1) holding for all l,m >= 0.at n=47A302971
• Primitive 5-abundant numbers: Numbers k such that sigma(k) > 5k (A215264) all of whose proper divisors d are 5-deficient numbers (having sigma(d) < 5d).at n=15A307115
• Table read by rows, T(n, k) = Y(2*n, k, Z(2*n - k)) where Y are the partial Bell polynomials and Z(m) is the list [A126869(j), j=-1..2*m].at n=41A350463
• a(n) is the smallest number with exactly n divisors that are square pyramidal numbers.at n=20A358543
• Numbers that have more biquadratefree divisors than any smaller number.at n=32A377140
• Numbers k that have a record number of divisors d such that gcd(d, k/d) is an exponentially odd number (A268335).at n=32A377708