91390

Appears in sequences

• Binomial coefficient binomial(n,4) = n*(n-1)*(n-2)*(n-3)/24.at n=40A000332
• Number of compositions of n into 5 ordered relatively prime parts.at n=36A000743
• Binomial coefficient C(4n,n-6).at n=4A004336
• Binomial coefficient C(5n,n-4).at n=4A004346
• Binomial coefficient C(8n, n-1).at n=4A004382
• Binomial coefficient C(40,n).at n=4A010956
• Binomial coefficient C(n,36).at n=4A010989
• Binomial coefficients C(2*n+4,4).at n=18A053134
• a(n) = binomial(4*n,4).at n=9A060541
• a(n) = lcm(n, n+1, n+2, n+3)/12.at n=36A067047
• 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=26A068904
• Pentagonal numbers (A000326) whose digit reversal is a prime.at n=31A115707
• Pentagonal numbers for which the sum of the digits is also a pentagonal number.at n=26A117709
• Pentagonal numbers for which both the sum of the digits and the product of the digits are pentagonal numbers.at n=16A117711
• Triangle, read by rows, where T(n,k) = C( n*(n+1)/2 + n-k, n-k), for n>=k>=0.at n=40A121334
• Square table, read by antidiagonals, where T(n,k) = C((n+1)*2^(k-1), k) for n>=0, k>=0.at n=40A136462
• Diagonal of square array A136462: a(n) = C((n+1)*2^(n-1), n) for n>=0.at n=4A136463
• List of numbers that are both pentagonal (A000326) and binomial coefficients C(n,4) (A000332).at n=25A145920
• Triangle T(n, k) = binomial(n*f(n,k), f(n,k)), where f(n, k) = k if k <= floor(n/2) otherwise n-k, read by rows.at n=59A157219
• Triangle T(n, k) = binomial(n*f(n,k), f(n,k)), where f(n, k) = k if k <= floor(n/2) otherwise n-k, read by rows.at n=61A157219