2203961430
domain: N
Appears in sequences
- a(n) = binomial coefficient C(2n, n-1).at n=17A001791
- Valence of graph of maximal intersecting families of sets.at n=33A007007
- Binomial coefficient C(34,n).at n=16A010950
- Binomial coefficient C(34,n).at n=18A010950
- a(n) = binomial(n,16).at n=18A010969
- a(n) = binomial(n,18).at n=16A010971
- a(n) = number of (s(0), s(1), ..., s(n)) such that s(i) is a nonnegative integer and |s(i) - s(i-1)| = 1 for i = 1,2,...,n and s(0) = 3. Also a(n) = Sum{T(n,k), k = 0,1,...,[ (n+3)/2 ]}, where T is defined in A026022.at n=32A026023
- a(n) = binomial(n, floor((n-1)/2)).at n=34A037952
- a(n) = binomial(n, floor(n/2)-1).at n=34A037955
- Maximum over k of the largest squarefree number dividing a value of binomial(n,k).at n=33A048681
- Squarefree part of n!: n! divided by its largest square divisor.at n=32A055204
- Binomial(n, phi(n)), where phi(n) is the Euler totient function.at n=33A066449
- Expansion of (1 + 2*x)*(1 + sqrt(1+4*x))/(2*sqrt(1+4*x)).at n=18A158500
- The radical of the swinging factorial A056040 for odd indices.at n=16A163640
- Expansion of ( 2F1([-1/4, 1/4]; [-1/2], 16*x) - 1 ) / (2*x).at n=8A186231
- Squarefree part of ((2n-1)!)^(2n-3).at n=16A197880
- Largest Euler characteristic of a downset on an n-dimensional cube.at n=34A214282
- a(n) = (n!*m)/(m!*(m+1)!) where m = floor(n/2).at n=34A237884
- Largest squarefree number in row n of Pascal's triangle.at n=34A238891
- n!/pp, where pp is the largest perfect power (A001597) which divides n!.at n=33A251753