206799
domain: N
Appears in sequences
- Self-convolution equals A113224.at n=16A113281
- Even bisection of A113281: a(n) = A113281(2*n).at n=8A113283
- Draw a regular n-gon and the enclosing circle, then for each pair of vertices X, Y, draw a circle with diameter XY; the union of these figures is the graph H_n; sequence gives number of edges in H_n.at n=28A370979