18564

Appears in sequences

• Figurate numbers or binomial coefficients C(n,6).at n=18A000579
• Binomial coefficients C(2n,n-3).at n=6A002696
• a(n) = (2^n/n!) * Product_{k=0..n-1} (4*k + 1).at n=6A004981
• a(n) = binomial(3n,n).at n=6A005809
• Expansion of (1-x^13) / (1-x)^13.at n=6A008495
• 11-dimensional centered tetrahedral numbers.at n=6A008505
• Binomial coefficient C(18,n).at n=6A010934
• Binomial coefficient C(18,n).at n=12A010934
• a(n) = binomial(n,12).at n=6A010965
• Triangular array formed from even elements to right of middle of rows of Pascal's triangle.at n=40A014476
• Number of compositions of n into 7 ordered relatively prime parts.at n=12A023032
• Binomial coefficients: C(n,k), 5 <= k <= n-5, sorted.at n=38A024749
• Binomial coefficients: C(n,k), 5 <= k <= n-5, sorted.at n=39A024749
• Binomial coefficients: C(n,k), 6 <= k <= n-6, sorted.at n=18A024750
• Binomial coefficients: C(n,k), 6 <= k <= n-6, sorted.at n=17A024750
• Binomial coefficients: C(n,k), 4 <= k <= n-4, sorted, duplicates removed.at n=40A024756
• Binomial coefficients: C(n,k), 5 <= k <= n-5, sorted, duplicates removed.at n=20A024757
• Binomial coefficients: C(n,k), 6 <= k <= n-6, sorted, duplicates removed.at n=10A024758
• Even elements to right of central elements in 3-Pascal triangle A028262.at n=44A028273
• a(n) = 6*(n+1)*(2*n+6)!/((n+3)!*(n+5)!).at n=7A028379