203946

Appears in sequences

• Starting positions of strings of four 7's in the decimal expansion of Pi.at n=27A083632
• a(n) = a(n-1) + a(n-2) - [a(n-4)/4] - [a(n-5)/2] - [a(n-6)/4].at n=31A173597
• Number of polygons formed when every pair of vertices of a regular n-gon are joined by an infinite line.at n=37A344857
• A344857(2*n).at n=18A347320