3203200
domain: N
Appears in sequences
- a(n) = n(n+1)(n+2)...(n+8) / (n+(n+1)+(n+2)+...+(n+8)).at n=5A032780
- a(n)=(3*n+1)!/(n!*3^n).at n=4A079929
- Product of terms in row n of A083106.at n=8A083108
- Row 3 of array in A288580.at n=13A092397
- a(n) = product of first n integers not divisible by 3.at n=8A111394
- Triangle, read by rows, where T(n,k) = n!/(k!*(n-3*k)!*3^k) for n>=3*k>=0.at n=39A118931
- a(n) = product of the first n integers from among those positive integers which are coprime to n.at n=8A123279
- a(n) = Product_{1<=k<=n/2, gcd(k,n)=1} k.at n=26A124441
- Number T(n,k) of permutations on n elements with exactly k 3-cycles; triangle read by rows.at n=39A186526
- The Gauss factorial n_3!.at n=13A232980
- Lagrange inversion, or reversion, for divided power series with odd powers only.at n=22A277394
- Expansion of e.g.f. exp((sinh(x) - sin(x))/2).at n=16A307978
- a(n) is the least integer that can be expressed as the difference of two octagonal numbers in exactly n ways.at n=29A334037