588107520

Appears in sequences

• Numbers expressible as (a^2 - 1)*(b^2 - 1) in 5 distinct ways.at n=0A057535
• Smallest number expressible as (a^2-1)(b^2-1) in at least n distinct ways [with b>=a>1].at n=4A063068
• a(1) = 1, a(n) = a(n-1) times smallest prime factor of n.at n=16A072486
• Numbers that can be written as (a^2-1)(b^2-1) in four or more distinct ways.at n=8A134857
• Numbers that can be written as (a^2 - 1)(b^2 - 1) in five or more distinct ways.at n=0A134858
• Positive numbers differing from next 4 greater squares by squares.at n=5A218488
• Numbers disqualified from being in A019505 for not being the smallest number with their respective number of divisors.at n=9A241813
• Number of weeks in n! seconds, for n >= 10.at n=7A267141
• Number of set partitions of [n] into five blocks with distinct sizes.at n=2A272517
• Triangle read by rows. A generalization of unsigned Lah numbers, called L[4,3].at n=39A292219
• Triangular array T(n,k) read by antidiagonals: T(2,1) = 1; otherwise T(n,k) = p(n)!/(p(k)!*p(n-k)!), where p(0)=1 and p(m)=prime(m) for m > 0.at n=31A360207
• Triangular array T(n,k) read by antidiagonals: T(2,1) = 1; otherwise T(n,k) = p(n)!/(p(k)!*p(n-k)!), where p(0)=1 and p(m)=prime(m) for m > 0.at n=32A360207