294504

Appears in sequences

• Wiener index of the n X n fiveleaper graph.at n=12A292040
• T(n,k) is (1/n) times the n-th derivative of the difference between the k-th tetration of x (power tower of order k) and its predecessor at x=1; triangle T(n,k), n>=1, 1<=k<=n, read by rows.at n=39A295027