a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 28.

A093228

a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 28.

Terms

    a(0) =0a(1) =284a(2) =336448a(3) =977280084004a(4) =73500084000

External references