25026

Appears in sequences

• One-half of averages of twin prime pairs of A001318.at n=17A154565
• a(n)^3 ends in n^3.at n=26A167178
• a(n) = 81*n^2 - 69*n + 24.at n=18A304616
• Regular triangle read by rows: T(n,k) is the k-th ionization energy of the n-th chemical element (in kJ/mol), rounded to the nearest integer.at n=13A322834
• Table read by antidiagonals: Place k equally spaced points on each side of a regular n-gon and join every pair of these n*k points by a chord; T(n,k) (n >= 3, k >= 0) gives the number of regions in the resulting planar graph.at n=38A367304