154350

Appears in sequences

• Triangle of D'Arcais numbers.at n=51A008298
• a(n) = n^2*(n-1)^3/4.at n=15A019584
• Expansion of Lambert W function in powers of log(log(x))/log(x).at n=24A073315
• a(1)=1, a(n) = Product_{k=2..n} P(k), where P(k) is the largest prime <= k.at n=8A118455
• Hemi-imperfect numbers: numbers such that the denominator of k/A206369(k) is equal to 2.at n=11A295236
• Triangle read by rows: T(n,k) is the number of permutations of k elements from [1..n] with longest consecutive chain size less than 3, when 1 and n are considered to be consecutive.at n=52A340107
• Number of 4 X 4 matrices in Hermite normal form with determinant n.at n=41A389108
• Irregular triangle T(n, k) = Product_{i=1..n} prime(i)^(k mod prime(i)), with n >= 0, and 0 <= k < A002110(n), read by rows.at n=56A391933