1560090
domain: N
Appears in sequences
- a(n) = product of terms in n-th row of A078448.at n=4A078450
- Smallest pentagonal number with n distinct prime factors.at n=6A156236
- The radical of the swinging factorial A056040 for odd indices.at n=13A163640
- The radical of the swinging factorial A056040.at n=27A163641
- Row sums of the Riordan matrix (1+x/sqrt(1-4*x),(1-sqrt(1-4*x))/2) (A189175).at n=12A189176
- Triangle read by rows: T(n,r) = binomial(n,r)*binomial(2*n-3*r-4,n-2*r-2)/(n-r-1), n >= 2, r = 0..floor(n/2)-1.at n=50A259097
- a(n) = product of primes p such that floor(n/p) is odd.at n=26A372000