20075

Appears in sequences

• Number of partitions of n into parts not of the form 19k, 19k+5 or 19k-5. Also number of partitions with at most 4 parts of size 1 and differences between parts at distance 8 are greater than 1.at n=39A035974
• Number of strongly monotone partitions of [n].at n=11A092920
• Take an n X n square grid of points in the plane; a(n) = number of ways to divide the points into two sets using a straight line.at n=15A114043
• Molecular topological indices of the gear graphs.at n=24A192827
• Triangle read by rows: T(n,k) = abs(C(n-k, k)*hypergeom([k-n/2, k-n/2+1/2], [1], -4)).at n=51A247488
• Number of length n+7 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=8A256822
• a(n) = (n^3 + 9*n + 14*n + 9)/3.at n=39A322595