105358

Appears in sequences

• Structured pentagonal icositetrahedral numbers (vertex structure 10).at n=21A100168
• 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 within a city block distance of two, and containing the value n(n+1)/2-2.at n=29A212039
• Centered heptagonal numbers which are sphenic numbers.at n=21A360183