501942
domain: N
Appears in sequences
- Binomial coefficients C(n,5).at n=38A000389
- Binomial coefficient C(38,n).at n=5A010954
- Binomial coefficient C(n,33).at n=5A010986
- T(n,5), array T as in A050186; a count of aperiodic binary words.at n=33A050190
- Binomial coefficients C(2*n-4,5).at n=16A053127
- a(n) = binomial(n,floor(n/7)).at n=38A062947
- Triangle, read by rows, where T(n,k) = binomial(n*(n-1)/2 - k*(k-1)/2 + n-k+3, n-k).at n=49A107873
- Triangle, read by rows, where T(n,k) = C( C(n+2,3) - C(k+2,3) + 3, n-k) for n>=k>=0.at n=15A126457
- Column 0 of triangle A126457; a(n) = C( C(n+2,3) + 3, n).at n=5A126458
- a(n) = binomial(2^n + n + 1, n).at n=5A132684
- Expansion of (1-sqrt(1-4*x))/(2*x) + 8*x^3/((sqrt(1-4*x))*(1+sqrt(1-4*x))^3).at n=12A141771
- Number of subsets of {1..n-1} whose cardinality is one less than the length of the binary expansion of n; a(0) = 0.at n=39A370819