8122425444

Appears in sequences

• a(n) = binomial(3n,n).at n=13A005809
• Binomial coefficient C(39,n).at n=13A010955
• a(n) = binomial(n,13).at n=26A010966
• Binomial coefficient C(n,26).at n=13A010979
• a(n) = binomial(2*n+1, n-6).at n=13A030056
• a(n) = binomial(composite(n), n), where composite = A002808, composite numbers.at n=25A064813
• Central column of triangle A065941.at n=26A065942
• a(n) = binomial(n, greatest prime factor of n).at n=38A080213
• Staircase on Pascal's triangle.at n=26A081204
• Number of ordered rooted trees with n non-root nodes such that the maximal outdegree equals ceiling(n/2).at n=27A303259
• a(n) = Sum_{k=0..n} (-1)^(n-k)*binomial(n, k)^2*hypergeom([(k-n)/2, (k-n+1)/2], [k+2], 4).at n=39A344503