3853870

Appears in sequences

• Triangle read by rows: T(n,k) is the number of simple connected graphs on n nodes with k center nodes.at n=54A294525
• Triangle read by rows: T(n,k) is the number of simple connected graphs on n nodes with k peripheral nodes.at n=54A324244
• Number of simple connected graphs on n unlabeled nodes with diameter equal to radius.at n=9A324264