7877520

Appears in sequences

• Coefficients in expansion of Eisenstein series -q*E'_6.at n=4A145095
• 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=49A295027