Help with definition of sequence

[Neil Fernandez]

In message <6872A80C-2710-11D9-BC3D-000A95B233C2 at sbcglobal.net>, Andrew
Plewe <aplewe at sbcglobal.net> writes

[snip]

>1,                                             1
>2,     1,                                      3
>3,     2,      1,                              6
>4,                                             4
>5,     3,      2,      1,                      11

[snip]

>As you can see, 
>it's essentially based on the primeth sequences (see, for example, 
>A007097).  Where I'm running into trouble is in figuring out how to 
>word a short description of the sequence.  Any suggestions?  Thanks!

In A049076, which gives their lengths, the left-hand sequences are
called prime index chains. So a(n) in the right hand sequence could be
defined as the sum of the terms in the prime index chain for n.

Neil

-- 
Neil Fernandez