420224

Appears in sequences

• Expansion of e.g.f. log(1+tanh(x)/cosh(x)).at n=10A009401
• a(n) = 5*2^(n-1) + 3*6^n/2.at n=7A154407
• Numbers n such that the sum of the digits squared times the sum of the digits of n to some power equals n.at n=14A257784