184008

Appears in sequences

• a(n) = 169*n^2 - n.at n=32A157998
• a(n) = 1089*n^2 - 33.at n=12A158692
• a(n) is the number of convex pentagons in an n-triangular net.at n=21A176646
• Number of 0..n arrays x(0..3) of 4 elements with each no smaller than the sum of its two previous neighbors modulo (n+1).at n=32A207101
• G.f. satisfies: A(x - A(x)^2) = x + 3*A(x)^2.at n=5A276362