[seqfan] Re: Biprimes of K

Robert G. Wilson v rgwv at rgwv.com
Wed Sep 17 08:12:41 CEST 2014


Ed,

	I have extended A026242 to 10000 terms. If you need more, they are easy to compute. A million terms would be easy enough.

Bob.

-----Original Message-----
From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of L. Edson Jeffery
Sent: Tuesday, September 16, 2014 10:03 PM
To: seqfan at list.seqfan.eu
Subject: [seqfan] Re: Biprimes of K

Éric,


Very nice, but we need more terms for A026242. I hope someone will take time to extend the b-file.

If you drop the two ones and let K = {2,3,2,4,3,5,...} with offset 1, then the sequence of indices for your BIP = 2,3,4,5,8,15,... (non-underlined elements of K) starts with 1,2,4,6,10,22 which is interesting as well and not in OEIS (unless it happens to be A005194 which is doubtful).

Ed Jeffery

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