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COMMENTS
| Sequence is finite.
There are no other terms. Proof. From the fact that the product of the digits is 8, we can conclude that each number contains either three '2's or a '2' and a '4' or a single '8' together with arbitrary many '1's. In the first case there has to be exactly one '1', otherwise the sum wouldn't be 7. This gives the numbers 1222, 2122, 2212, 2221. In the second case, there can also be only one '1', this yields the numbers 124, 142, 214, 241, 412, 421. The third case is not possible because 8 is for itself already bigger than 7. All those terms are listed, hence the sequence is complete. - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jun 07 2007
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