210304

Appears in sequences

• Numbers n such that (i) the largest prime factor of n is not a palindrome and (ii) the sum of the factorials of the digits of n is equal to the largest prime factor of n reversed.at n=29A074301
• Let f(k) denote the largest prime factor of k which is not a palindrome. Sequence gives numbers k such that the sum of the factorials of the digits of k is equal to f(k) reversed.at n=30A111185
• E.g.f.: exp(Sum_{n>=1} A010815(n)*x^n/n).at n=10A294341