79897domain: NAppears in sequencesa(n) = floor(4th elementary symmetric function of Sum_{j=1..k} 1/j, k = 1,2,...,n).at n=12A025214Smallest palindrome with digit sum = n.at n=40A062388Palindromic brilliant numbers.at n=33A084350Smallest palindrome with digital root n and n + 1 decimal digits.at n=4A213341