128086

Appears in sequences

• From George Gilbert's marks problem: jumping 4 marks at a time (initial positions).at n=26A019595
• a(n) = Sum_{k=1..n} k*binomial(n, k)^3*(n^2 + n - k*n - k + k^2)/((n - k + 1)^2*n).at n=6A201640
• Numbers k such that (86*10^k - 221)/9 is prime.at n=26A288823