71071

Appears in sequences

• Expansion of 1/((1+x)*(1-x)^5).at n=40A001752
• a(n) = n*(n + 1)*(2*n^2 + 2*n - 1)/6.at n=20A006324
• Strong pseudoprimes to base 17.at n=26A020243
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= (n+1)/3.at n=19A048044
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= (n+2)/3.at n=19A048077
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= (n+3)/3.at n=19A048088
• Coefficients of series giving the best rational approximations to e.at n=2A122523
• Numbers k such that 4^(2*k) + 2*k + 1 is a prime.at n=8A301633