[seqfan] Re: A024812

[L. Edson Jeffery]

In fact at least the first 41 terms match. What's going on here?

Ed Jeffery



On Wed, Mar 20, 2013 at 12:25 AM, L. Edson Jeffery <lejeffery2 at gmail.com>wrote:
I get the same sequence Robert gets: {4, 7, 12, 15, 18, 23, 26, 29, 34, 37,
...}.

Note that adding n-1 to the n-th term above gives the sequence

{4, 8, 14, 18, 22, 28, 32, 36, 42, 46, ...}

and dividing the terms by two gives

{2, 4, 7, 9, 11, 14, 16, 18, 21, 23, ...}

which so far matches the first ten terms of A024812. Very strange. But I
have no idea how far out this coincidence agrees.

Ed Jeffery

On Wed, Mar 20, 2013 at 12:25 AM, L. Edson Jeffery <lejeffery2 at gmail.com>wrote:

> I get the same sequence Robert gets: {4, 7, 12, 15, 18, 23, 26, 29, 34, 37,
> ...}.
>
> Note that adding n-1 to the n-th term above gives the sequence
>
> {4, 8, 14, 18, 22, 28, 32, 36, 42, 46, ...}
>
> and dividing the terms by two gives
>
> {2, 4, 7, 9, 11, 14, 16, 18, 21, 23, ...}
>
> which so far matches the first ten terms of A024812. Very strange. But I
> have no idea how far out this coincidence agrees.
>
> Ed Jeffery
>