The return of dupe hunting, pt. 1

[Max Alekseyev]

On 9/20/07, Andrew Plewe <aplewe at sbcglobal.net> wrote:

> Straightforward duplicates:
> ---------------------------
> http://www.research.att.com/~njas/sequences/?q=id:A022555|id:A057903&fmt=1

These are not duplicates. A022555 is a subsequence of A057903, but
A057903 contains cubes that are not elements of A022555.
In other words, A057903 = A022555 U A000578, except for 0 that would
be an element of A057903 if it were defined as "Nonnegative
integers...". Perhaps, it makes sense to modify A057903 this way.

> http://www.research.att.com/~njas/sequences/?q=id:A083318|id:A000051&fmt=1

Agree.
Moreover, A083318 erroneously contains term 1 which shouldn't be there.

> Possible duplicates:
> --------------------
> http://www.research.att.com/~njas/sequences/?q=id:A123193|id:A000028&fmt=1

These are not duplicates.
The 75th term of A000028 is 180 which is not a term of A123193.

> http://www.research.att.com/~njas/sequences/?q=id:A109421|id:A000037&fmt=1

These are not duplicates either. A000037 contains term 8 which is not
a term of A109421.

Max