675675

Appears in sequences

• a(n) = (n/(n+1)) * lcm(1,2,...,n+1).at n=14A025558
• a(n) = 35*(n+1)*binomial(n+4, 7)/4.at n=8A027803
• a(n) = 165*(n+1)*binomial(n+4,11)/4.at n=4A027807
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= n/2.at n=23A047166
• Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= n/2.at n=23A047167
• a(n) = (2*n + 3)!!/3 = A001147(n+2)/3.at n=6A051577
• Highly composite odd numbers: odd numbers where d(n) increases to a record.at n=20A053624
• Denominators of coefficients of odd powers of 1/q in the solution series for Tan[x]/x=1.at n=6A088989
• Triangle of certain double factorials.at n=51A092081
• Odd nonunitary abundant numbers.at n=15A094889
• Where A098018(k)=n.at n=23A098869
• Second Eulerian transform of 1, 2, 3, 4, 5, ... (A000027).at n=7A102147
• Max{ k!/(a(1)!*a(2)!*..*a(n)!) : a(1) + 2*a(2) + 3*a(3) + ... + n*a(n) = n, a(1) + a(2) + ... + a(n) = k }.at n=26A102462
• Oddly colossally abundant numbers.at n=7A110464
• An invertible triangle of ratios of double factorials.at n=38A112292
• Coefficient triangle for polynomials used for e.g.f.s for unsigned Stirling1 diagonals.at n=34A112486
• Oddly superabundant numbers: odd n with sigma(n)/n > sigma(k)/k for all odd k < n.at n=18A119239
• (n-1)! divided by (product phi(d)! ; d divides n).at n=15A120066
• Fourth column (m=3) of the Laguerre-Sonin a=1/2 coefficient triangle.at n=4A130563
• Noncrossing set partition version of A102356.at n=15A130760