271470

Appears in sequences

• Structured pentagonal icositetrahedral numbers (vertex structure 10).at n=29A100168
• Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any element at a city block distance of two, and containing the value n(n+1)/2-2.at n=37A212031
• Number of chordless cycles in the n-Moebius ladder.at n=25A297667