92377

Properties

Appears in sequences

• Expansion of (1-x^10) / (1-x)^10.at n=10A008492
• a(n) = binomial(2n+1, n+1) - 1.at n=9A010763
• Central binomial coefficient - 1.at n=19A014495
• Number of compositions of n into 10 ordered relatively prime parts.at n=10A023035
• One less than number of n-multisets chosen from a 10-set.at n=10A035927
• Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= (n-1)/2.at n=19A047171
• Moebius transform of A001405 (binomial(n, floor(n/2))).at n=18A062791
• Primes of the form (2*k)!/(2*(k!)^2)-1.at n=2A112862
• Primes p such that p, p+4, p+10, p+22, p+24, p+42 are all primes.at n=18A144594
• Ordered differences of numbers s(j)=(1/2)C(2j,j).at n=36A205384
• Number of permutations p of [n] such that p(i) > p(i+1) iff i == 0 (mod 10).at n=19A250287
• Smallest of five consecutive primes in arithmetic progression with common difference 90 and equal digit sums.at n=38A253232
• a(n) is the numerator of tanh(Sum_{k=1..n-1} artanh(k/n)), where artanh is the inverse hyperbolic tangent function.at n=9A382257
• Prime numbersat n=8922