67632
domain: N
Appears in sequences
- Number of twice-partitions of n into distinct strict partitions.at n=26A358914
- Table read by antidiagonals: Place k equally spaced points on each side of a regular n-gon and join every pair of these n*k points by a chord; T(n,k) (n >= 3, k >= 0) gives the number of edges in the resulting planar graph.at n=50A367305
- a(n) = Sum_{k=0..floor(n/4)} (n-3*k+1) * binomial(n-3*k,k)^2.at n=17A376735