244824

Appears in sequences

• Smallest multiple of n beginning and ending in n and having a digit sum of n, or 0 if no such number exists.at n=23A077739
• Smallest multiple of n beginning and ending in n and with a digit sum that is divisible by n.at n=23A078213
• Arises in enumerating Huffman codes, compact trees, and sums of unit fractions.at n=20A194629