131043

Appears in sequences

• Numbers k such that the standard deviation of 1,...,k is an integer.at n=5A007654
• a(n,m) =Floor[N[(-2 + Sqrt[3])^n + (-2 - Sqrt[3])^n]/2^m].at n=46A117809
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where A(n,k) is 1/2 * (-1 + Sum_{j=0..k} binomial(2*k,2*j)*(n+1)^(k-j)*n^j).at n=39A322699
• a(n) = n * (16*n^2+20*n+5)^2.at n=3A322745
• Numbers k such that k and k+1 are both divisible by the square of their largest prime factor.at n=32A354558