84357

Appears in sequences

• When expressed in base 3 and then interpreted in base 4, is a multiple of the original number.at n=19A062853
• The larger companion to the deficient numbers in A212608.at n=24A212609
• Place two n-gons with radii 1 and 2 concentrically, forming an annular area between them. Connect all the vertices with line segments that lie entirely within that area. Then a(n) is the number of vertices in that figure.at n=36A337701