Proposes updates to A033178, A033179.

[Brendan McKay]

* hv at crypt.org <hv at crypt.org> [050408 21:23]:
> David Wasserman <dwasserm at earthlink.com> wrote:
> :>%C A033178 The multiset {n, 2, 1x(n-2)} ....  
> :
> :Is this a standard notation for multisets?  I haven't seen it before, but I haven't read much about multisets.  I do know that in non-mathematical writing, it's common to use x to indicate repetition, and the number of repetitions usually comes before the x.  So "1x(n-2)" is ambiguous.  I think "(n-2)x 1" would be clearer.  You could also just put "1, 1, ..., 1"; the number of 1s can be inferred from the fact that the multiset has n elements.
> 
> I used "<1> x (n-2)" in the hope that it would minimise ambiguity.
> In this case the thing repeated tends to be much simpler than the repeat
> count, so it would likely be harder to read if the order was reversed.

Can I suggest "1 (n-2 times)"?  Let's not use nonstandard notation
as both these suggestions are.

Brendan.