例句與造句

1. Keith was the first to describe primeval numbers and Keith numbers.
2. It is also a Keith number, because it recurs in a Fibonacci-like sequence started from its base 10 digits : 2, 8, 10, 18, 28 . ..
3. A "'repfigit "', or "'Keith number "', is an integer such that, when its digits start a Fibonacci sequence with that number of digits, the original number is eventually reached.
4. It is a Lucas number because its digits appear as successive terms earlier in the series of Lucas numbers : 2, 1, 3, 4, 7, 11, 18, 29, 47 &; it is also a Keith number.
5. It's difficult to find keith numbers in a sentence. 用keith numbers造句挺難的