72427

Appears in sequences

• Palindromes of the form 3n + 1 where n is also a palindrome: palindromes arising in A083829.at n=22A083830
• Palindromic composite numbers starting with a digit 7.at n=35A222728
• Similar to A374525, but for each starting matrix with a choice of whether to sort by columns or rows first, such that the total number of sorting steps for this matrix is minimized.at n=18A374526