20288

Appears in sequences

• Number of points on surface of truncated cube: a(n) = 46*n^2 + 2 for n > 0.at n=21A005911
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 71.at n=28A031569
• Number of ways to build a contiguous building with n LEGO blocks of size 2 X 2 on top of a fixed block of the same size.at n=3A123821
• a(n) = 2^n*A141316(n).at n=4A185281
• Number of segments needed to draw (on the infinite square grid) a diagram of regions and partitions of n.at n=32A211026
• The number of regions inside a vesica piscis formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.at n=13A341877
• Expansion of Product_{k>=1} (1 + x^k*(1+x)) / (1 - x^k*(1+x)).at n=14A346679
• Number of finite edges in the graph formed when every pair of vertices of a row of n adjacent congruent rectangles are joined by an infinite line.at n=13A347751