1379840

Appears in sequences

• Numbers k that divide the (right) concatenation of all numbers <= k written in base 17 (most significant digit on left).at n=31A029462
• a(n) = n!! mod n!!!at n=22A217649
• Least n-gonal number that can be written as a product of two or more smaller n-gonal numbers, or 0 if no such number exists.at n=18A374371