982086

Appears in sequences

• Invariant number of polygons of n-circum-C_5 H_5 systems.at n=13A122678
• Define a pair of sequences c_n, d_n by c_0=0, d_0=1 and thereafter c_n = c_{n-1}+d_{n-1}, d_n = c_{n-1}+4*n+2; sequence here is d_n.at n=25A192750
• Number of n X 3 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.at n=6A268623
• Number of nX7 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.at n=2A268627
• T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.at n=38A268628