2558620845
domain: N
Appears in sequences
- Binomial coefficient C(3n,n-12).at n=8A004330
- Binomial coefficient C(4n,n-7).at n=8A004337
- Binomial coefficient C(5n,n-4).at n=8A004346
- Binomial coefficient C(6n,n-2).at n=8A004357
- Binomial coefficients C(n,52).at n=8A017716
- Binomial coefficients C(60,n).at n=8A017776
- Binomial coefficients C(2*n+8,8).at n=26A053137
- a(n) = binomial(sigma(n), phi(n)).at n=23A064366
- a(n) = binomial(sigma(n),tau(n)), where sigma(n) is the sum and tau(n) the number of divisors of n (A000203, A000005).at n=23A068904
- Irregular triangle read by rows: T(n,k) = number of size k subsets of S_n that remain unchanged by reverse.at n=55A277080