30045015
domain: N
Appears in sequences
- a(n) = binomial coefficient C(n,10).at n=20A001287
- Binomial coefficient C(2n,n-5).at n=10A004311
- a(n) = binomial(3n,n).at n=10A005809
- Binomial coefficient C(30,n).at n=10A010946
- Binomial coefficient C(30,n).at n=20A010946
- a(n) = binomial(n,20).at n=10A010973
- Binomial coefficients: C(n,k), 10 <= k <= n-10, sorted, duplicates removed.at n=23A024762
- Number of combinations of n objects taken pi(n) at a time.at n=30A037031
- a(n) = binomial(n, floor(n/3)).at n=30A051033
- Central column of triangle A065941.at n=20A065942
- Staircase on Pascal's triangle.at n=20A081204
- Number of compositions (ordered partitions) of the n-th prime into n positive integers.at n=10A104861
- a(n) = binomial((n+2)*(n+1),(n+1)*n).at n=4A136419
- Triangle T(n, k, m) = round( Product_{j=0..m} binomial(2*(n+j), 2*(k+j))/binomial( 2*(n-k+j), 2*j) ), where m = 9, read by rows.at n=22A156742
- Triangle T(n, k, m) = round( Product_{j=0..m} binomial(2*(n+j), 2*(k+j))/binomial( 2*(n-k+j), 2*j) ), where m = 9, read by rows.at n=26A156742
- Symmetrical sequence:Binomial(n,5*m).at n=23A177809
- Symmetrical sequence:Binomial(n,5*m).at n=25A177809
- Binomial coefficients C(2*n+10,10).at n=10A196789
- a(n) = Sum_{k=0..10} binomial(20,k)*binomial(n,k).at n=10A247615
- Number of ordered rooted trees with n non-root nodes such that the maximal outdegree equals ceiling(n/2).at n=21A303259