374119

Appears in sequences

• Number of series-reduced connected labeled graphs with n nodes.at n=7A003515
• Number of n X 3 0..1 arrays with every element unequal to 0, 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.at n=16A306124
• Triangle T(n,k) read by rows: number of series-reduced labeled graphs on n nodes with k components.at n=21A307806